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  • *[[Discrete-time_Fourier_transform_info|Discrete-time Fourier transform (DTFT)]]
    2 KB (209 words) - 13:07, 9 September 2022
  • ...ay also add any other category you feel is appropriate (e.g., "homework", "Fourier", etc.).
    2 KB (238 words) - 16:54, 23 April 2013
  • [[Category: Fourier]] [[Category: Fourier Transform]]
    2 KB (268 words) - 12:14, 10 December 2008
  • ...representation of continuous-time periodic signals_(ECE301Summer2008asan)|Fourier Series representation of continuous-time periodic signals]] ...ourier Series Representation of CT periodic signals_(ECE301Summer2008asan)|Fourier Series Representation of CT periodic signals]]
    7 KB (921 words) - 06:08, 21 October 2011
  • Determine the Fourier Series co-efficient for the following continuous time periodic signals.Show
    1 KB (182 words) - 11:05, 21 November 2008
  • 1)a)If a discrete time singal x[n] is periodic with period N, then the Fourier series coefficients <math>a_k</math> of the signal x[n] is also periodic wi ...er a continuous-time periodic signal x(t) with period T = 5 whose non-zero Fourier series coefficients <math>a_k</math> are given by
    4 KB (815 words) - 10:57, 21 November 2008
  • #REDIRECT [[Fourier Series representation of continuous-time periodic signals (ECE301Summer2008
    102 B (11 words) - 11:16, 21 November 2008
  • ==[[ECE 301 Fall 2007 mboutin Fourier Series|Fourier Series]]== {{:ECE 301 Fall 2007 mboutin Fourier Series}}
    3 KB (297 words) - 16:56, 23 April 2013
  • [[Category: Fourier]] [[Category: Fourier Series]]
    842 B (120 words) - 12:21, 9 December 2008
  • [[Category: Fourier]] [[Category: Fourier Series]]
    5 KB (834 words) - 17:26, 23 April 2013
  • ==[[ECE 301 Fall 2007 mboutin DT Fourier Series in Matlab|DT Fourier Series in Matlab with ONE Command]]== {{:ECE 301 Fall 2007 mboutin DT Fourier Series in Matlab}}
    1,000 B (121 words) - 12:50, 18 December 2008
  • ==[[ECE 301 Fall 2007 mboutin Fourier Coefficient LTI Transfer|Coefficient LTI Transfer]]== {{:ECE 301 Fall 2007 mboutin Fourier Coefficient LTI Transfer}}
    264 B (30 words) - 13:07, 9 December 2008
  • ...sform pair over and over... Note: I can not find a way to display a proper fourier symbol, so I went with the "\displaystyle {\bf F}" as seen below. ...al since, it becomes clear that it is only necessary to take the dual of a Fourier Transform Pair once. After taking the dual once, one might as well use time
    1 KB (241 words) - 10:13, 10 December 2008
  • [[Category: Fourier]] [[Category: Fourier Transform]]
    2 KB (321 words) - 11:28, 10 December 2008
  • [[Category: Fourier]] [[Category: Fourier Transforms]]
    1 KB (227 words) - 11:54, 10 December 2008
  • [[Category: Fourier]] [[Category: Fourier Series]]
    1 KB (186 words) - 17:25, 23 April 2013
  • ...expansion allows us to fit functions to the known ones given by the known Fourier Transform pairs table.
    4 KB (616 words) - 17:26, 23 April 2013
  • [[Category: Fourier]] Jean Baptiste Joseph Fourier (1768 - 1830)
    3 KB (390 words) - 12:10, 11 December 2008
  • [[Category: Fourier]] [[Category: Fourier Transforms]]
    2 KB (263 words) - 12:19, 11 December 2008
  • Taking the inverse Fourier transform of the frequency response, we obtain
    4 KB (688 words) - 12:34, 11 December 2008
  • [[Category: Fourier]] [[Category: Fourier Transform]]
    3 KB (431 words) - 17:29, 23 April 2013
  • [[Category: Fourier]] [[Category: Fourier Transform]]
    2 KB (303 words) - 10:13, 12 December 2008
  • 1: Take the Fourier transform of the equation, ...ansion|Guide to Partial Fraction Expansion]]) to facilitate use of inverse Fourier transform,
    2 KB (248 words) - 08:31, 9 March 2011
  • [[Category: Fourier]] [[Category: Fourier Transforms]]
    2 KB (379 words) - 08:35, 9 March 2011
  • [[Category: Fourier]] [[Category: Fourier Series]]
    936 B (157 words) - 12:11, 12 December 2008
  • ...other content exists in the signal at a higher frequency. If you take the Fourier transform of a signal and can find a point at which the signal is equal to : Below is a Fourier transform of a signal, you can see that is is bandlimited because it has a
    3 KB (591 words) - 17:24, 23 April 2013
  • ...ich is equal to two times the absolute value of the frequency at which the Fourier transform of the signal is zero for values greater than said frequency) you ...mega_m\ </math>, where <math> \omega_m\ </math> is the frequency where the Fourier transform of the signal equals zero for all frequencies greater than <math>
    4 KB (689 words) - 12:48, 12 December 2008
  • [[Category: Fourier]] [[Category: Fourier Series]]
    808 B (131 words) - 13:04, 18 December 2008
  • | align="right" style="padding-right: 1em;" | Monday || 01/26/09 || CT Fourier transform || 1.3.2 || DT systems | align="right" style="padding-right: 1em;" | Wednesday || 01/28/09 || DT Fourier transform, <span style="color:red"> HW1 due </span> || 1.3.3 ||
    6 KB (689 words) - 07:59, 2 August 2010
  • [[Fourier Series Homework_MA181Fall2008bell]]
    3 KB (390 words) - 06:35, 10 August 2010
  • *[[Lecture19_ECE301Fall2008mboutin|Lecture 19]]: TA Example Session w/ DT Fourier Transforms and inverses
    5 KB (720 words) - 06:10, 16 September 2013
  • ...ay also add any other category you feel is appropriate (e.g., "homework", "Fourier", etc.).
    3 KB (432 words) - 05:15, 2 February 2011
  • ...ay also add any other category you feel is appropriate (e.g., "homework", "Fourier", etc.).
    1 KB (199 words) - 11:59, 2 March 2009
  • ...ay also add any other category you feel is appropriate (e.g., "homework", "Fourier", etc.).
    3 KB (441 words) - 17:45, 22 October 2010
  • ...ing-right: 1em;" | [[DT Fourier Transform_ECE301Fall2008mboutin]] || {{:DT Fourier Transform_ECE301Fall2008mboutin}} ...| [[DT Inverse Fourier Transform_ECE301Fall2008mboutin]] || {{:DT Inverse Fourier Transform_ECE301Fall2008mboutin}}
    8 KB (989 words) - 07:20, 5 February 2009
  • [[ Table_of_Formulas_and_Properties_ECE301Fall2008mboutin | Ece 301 Fourier Transorm Properties and Formulas ]]
    136 B (17 words) - 07:14, 5 February 2009
  • [[ Table_of_Formulas_and_Properties_ECE301Fall2008mboutin | Ece 301 Fourier Transorm Properties and Formulas ]]
    136 B (17 words) - 07:15, 5 February 2009
  • - Using sinc and rect functions along with Fourier transform properties is key to solving some of the problems <br> ...erent: do not confuse them with each other. The DTFT is the discrete time Fourier transform of x[n], which is the sampled signal of continuous time signal x(
    546 B (93 words) - 20:27, 18 February 2009
  • ...have any tips for a different way to do this problem or on how to find the fourier transform of the sinc function? Thanks! --[[User:Kklacik|Kklacik]] 16:35,
    572 B (91 words) - 15:28, 10 February 2009
  • == 1.6.4 FFT "Fast Fourier transform" ==
    2 KB (376 words) - 06:44, 16 September 2013
  • * PM's discussion of Linear algebra and Fourier series: pp. 232-240, 247-253, 399-409, ...llak/ee438/FALL01/Fourier_notes1.pdf Prof. Pollak's supplementary notes on Fourier series]
    8 KB (1,226 words) - 11:40, 1 May 2009
  • == [[Fourier Properties]] ==
    857 B (122 words) - 07:25, 23 July 2009
  • | [[student_summary_CT_DT_Fourier_transform_ECE438F09|CT and DT Fourier transform]] | [[student_summary_Discrete_Fourier_transform_ECE438F09|Discrete Fourier transform]]
    7 KB (1,067 words) - 12:05, 25 June 2010
  • Find the Fourier Sine Series for:
    408 B (71 words) - 12:35, 6 December 2008
  • ...heir amplitude, frequency and phase. The most common technique for this is Fourier Analysis.
    583 B (93 words) - 09:35, 5 September 2008
  • ...amplitude, frequency and phase. This is most commonly done in the form of Fourier Analysis.
    614 B (98 words) - 09:41, 5 September 2008
  • ...and cosine are common periodic functions, with period 2π. The subject of Fourier series investigates the idea that an 'arbitrary' periodic function is a sum
    1 KB (253 words) - 07:04, 14 April 2010
  • ==Periodic CT Signal, Fourier Series Coefficients== ==Periodic DT Signal, Fourier Series Coefficients==
    12 KB (1,544 words) - 11:27, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    1 KB (217 words) - 11:04, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    1,021 B (156 words) - 10:58, 16 September 2013
  • 2) x(t) is periodic with period T = 2 and has Fourier coefficients <math> ak </math>
    615 B (95 words) - 17:51, 25 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    1 KB (197 words) - 10:59, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    1 KB (192 words) - 10:58, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    1 KB (242 words) - 10:58, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    1 KB (186 words) - 10:58, 16 September 2013
  • Find the Fourier Series coefficients of x[n] ...hat you do not have to use the formula for this problem. x[n] looks like a Fourier series. wo=pi/2, so
    2 KB (415 words) - 11:46, 23 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    671 B (107 words) - 10:57, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    778 B (122 words) - 10:57, 16 September 2013
  • ...of your system to the signal you defined in Question 1 using H(s) and the Fourier series coefficients of your signal.
    1 KB (223 words) - 07:30, 25 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    2 KB (306 words) - 10:57, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    2 KB (384 words) - 10:56, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    783 B (123 words) - 10:59, 16 September 2013
  • '''Fourier series:'''
    229 B (44 words) - 10:40, 24 September 2008
  • ==Fourier Series Coefficients==
    1 KB (162 words) - 13:40, 24 September 2008
  • The Fourier series coefficients can be calculated with: Let us look for the Fourier series coefficients for the DT signal <big><math>x[n] = cos(3\pi n)</math><
    1 KB (230 words) - 14:22, 26 September 2008
  • ==DT Signal Fourier Coefficients== Now to find the fourier series coefficients:
    2 KB (271 words) - 17:36, 25 September 2008
  • The Fourier series coefficients for <math>x[n]</math> are:
    1 KB (222 words) - 13:55, 24 September 2008
  • ==CT Signal & its Fourier coefficients== Knowing that its Fourier series is
    369 B (68 words) - 21:38, 23 September 2008
  • == Fourier Series Coefficients for a DT signal ==
    650 B (95 words) - 07:26, 24 September 2008
  • == A Periodic CT signal and it's Fourier Coefficients == '''Fourier Coefficents'''
    143 B (21 words) - 10:15, 24 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    3 KB (464 words) - 10:58, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    834 B (129 words) - 10:56, 16 September 2013
  • === Fourier series === ===CT Fourier transform ===
    2 KB (243 words) - 08:04, 21 November 2008
  • <font size="3">Let <math>x(t)=cos(4 \pi t) + sin(6 \pi t)</math> with Fourier series coefficients are as follows:
    904 B (165 words) - 12:58, 24 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    2 KB (384 words) - 10:55, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    2 KB (360 words) - 10:55, 16 September 2013
  • Fourier Series Coefficients:
    1 KB (175 words) - 17:18, 24 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    2 KB (429 words) - 10:55, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    2 KB (250 words) - 10:54, 16 September 2013
  • == Fourier Series for DT signals ==
    907 B (155 words) - 06:49, 25 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    837 B (141 words) - 10:56, 16 September 2013
  • ==Define a periodic DT signal and compute its Fourier series coefficients. ==
    480 B (88 words) - 18:22, 26 September 2008
  • ...of your system to the signal you defined in Question 1 using H(s) and the Fourier series coefficients of your signal.
    1 KB (241 words) - 18:42, 26 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    863 B (144 words) - 10:54, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    2 KB (363 words) - 10:56, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    966 B (160 words) - 10:53, 16 September 2013
  • ...ath>a_3</math>. This result along with hints 3 and 4 give the rest of the Fourier coefficients.
    1 KB (203 words) - 17:19, 25 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    2 KB (410 words) - 10:53, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    1 KB (216 words) - 11:02, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    2 KB (279 words) - 10:54, 16 September 2013
  • == Define a Periodic DT Signal and Compute the Fourier Series Coefficients ==
    3 KB (405 words) - 12:42, 25 September 2008
  • == Computing the Fourier series coefficients for a Discrete Time signal x[n] ==
    900 B (178 words) - 12:47, 25 September 2008
  • == Response of y[n] to the signal I defined in Question 2 using H[z] and the Fourier series coefficients ==
    1 KB (242 words) - 13:11, 25 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    2 KB (283 words) - 10:55, 16 September 2013
  • == Definition of fourier transform for DT signal == These are the fourier coefficients, which must be calculated from the function in this case, rath
    2 KB (374 words) - 14:27, 25 September 2008
  • ...is an infinite sum of shifted copies of a non-periodic signal, compute its Fourier series coefficients. The equation for determining the Fourier coefficients of a DT signal is
    2 KB (375 words) - 15:10, 25 September 2008
  • '''Problem:''' Find the Fourier series coefficients of x[n], where x[n] is a square wave with fundamental p '''Solution:''' A periodic DT signal can be expressed as a Fourier series in the following manner:
    2 KB (313 words) - 14:17, 25 September 2008
  • ...nd [[HW4.2_Brian_Thomas_ECE301Fall2008mboutin|here]] by using H(z) and the Fourier series coefficients of x[n]. '''b)''' Given the Fourier coefficients, x[n] can be expressed as follows:
    2 KB (355 words) - 16:48, 25 September 2008
  • Computing the Fourier series coefficients...<br><br>
    770 B (140 words) - 15:12, 25 September 2008
  • I have to multiply each of these fourier coefficients by my <math>H[z]\,</math>, also noting that my <math>\,\omega
    1 KB (235 words) - 15:29, 25 September 2008
  • Using the Fourier coefficients determined in problem 1, we can express the system's response
    2 KB (434 words) - 18:11, 25 September 2008
  • Given that the definition of a signal defined by fourier transforms is shown like:
    1 KB (203 words) - 16:00, 25 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    1 KB (205 words) - 10:56, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    1 KB (210 words) - 11:03, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    911 B (165 words) - 11:03, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    1 KB (215 words) - 10:59, 16 September 2013
  • Using the Fourier coefficients calculated in problem 2, we can express the system's response
    2 KB (360 words) - 18:54, 25 September 2008
  • == CT Fourier Series ==
    662 B (136 words) - 09:55, 26 September 2008
  • == DT Fourier Series ==
    1 KB (280 words) - 15:40, 26 September 2008
  • Discrete time Fourier series
    499 B (77 words) - 19:03, 25 September 2008
  • 1. x[n] is periodic with period 4 and has Fourier coefficients <math>\,a_k\,</math>. 3. The Fourier coefficients <math>\,a_1\,</math> and <math>\,a_3\,</math> are equal.
    1 KB (250 words) - 20:40, 25 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    1 KB (182 words) - 11:03, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    984 B (159 words) - 11:04, 16 September 2013
  • == Fourier Series == == Fourier Series Coefficients ==
    967 B (170 words) - 14:35, 26 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    891 B (142 words) - 11:01, 16 September 2013
  • The Fourier Series coefficients are:
    876 B (173 words) - 04:45, 26 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    777 B (123 words) - 11:05, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    885 B (159 words) - 11:01, 16 September 2013
  • ...of your system to the signal you defined in Question 1 using H(s) and the Fourier series coefficients of your signal==
    2 KB (349 words) - 08:25, 26 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    1 KB (163 words) - 11:05, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    938 B (158 words) - 11:02, 16 September 2013
  • ...of your system to the signal you defined in Question 2 using H(z) and the Fourier series coefficients of your signal=
    1 KB (241 words) - 09:04, 26 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    989 B (173 words) - 11:06, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    806 B (120 words) - 11:06, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    1 KB (195 words) - 11:07, 16 September 2013
  • Recall the Fourier Series formulae for the continuous time signal case: Now the Fourier coefficients should be fairly obvious.
    1 KB (261 words) - 13:32, 26 September 2008
  • x[n] with Fourier series representation (pg. 230):<br>
    637 B (101 words) - 13:22, 26 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    1 KB (201 words) - 11:06, 16 September 2013
  • 2. x[n] has period N = 10 and Fourier coefficients <math>\ a_k</math>
    800 B (136 words) - 15:12, 26 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    1 KB (228 words) - 11:07, 16 September 2013
  • == DT signal & its Fourier Coefficients == Knowing its Fourier series is:
    1 KB (200 words) - 17:10, 26 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    1 KB (188 words) - 11:08, 16 September 2013
  • Then we can calculate the system's response to a signal using H[z] and the fourier coefficients for the system. My signal from part 2 has fourier coefficients:
    1 KB (203 words) - 16:23, 26 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    1 KB (215 words) - 11:04, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
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  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    877 B (147 words) - 10:53, 16 September 2013
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
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  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
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  • == Fourier Series Coefficients ==
    462 B (89 words) - 16:43, 26 September 2008
  • The Fourier series coefficients in <math>x(t)=cos(3 \pi t) + sin(8 \pi t)</math> are:
    986 B (178 words) - 16:31, 26 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    2 KB (291 words) - 10:54, 16 September 2013
  • ==Response of the Signal and Fourier Series Coefficients==
    1 KB (214 words) - 17:41, 26 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    863 B (140 words) - 11:08, 16 September 2013
  • = Fourier series coefficients for DT signal = ==Fourier series coefficients==
    818 B (140 words) - 17:14, 26 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    822 B (139 words) - 10:57, 16 September 2013
  • 2. x(t) is periodic with period T = 4 and Fourier coefficients <math> \ a_k </math>. as cos(t) is an even function with a Fourier Series representation that has coefficients of 0 for absolute values of k g
    992 B (159 words) - 18:33, 26 September 2008
  • 4. The Fourier coefficients of the signal are 0 for all <math>a_{k} </math> except <math>a
    416 B (69 words) - 18:18, 26 September 2008
  • [[Category:Fourier series]] == Example of Computation of Fourier series of a CT SIGNAL ==
    1 KB (169 words) - 11:09, 16 September 2013
  • Compute the response of the system to the signal using H(s) and the Fourier series coefficients of the signal.<br><br>
    905 B (182 words) - 19:11, 26 September 2008
  • ==Fourier Transform== ==Inverse Fourier Transform==
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • Specify a Fourier transform X(w) and compute its inverse Fourier transform using the integral formula. (Make it difficult).
    123 B (19 words) - 11:20, 3 October 2008
  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
    2 KB (263 words) - 12:30, 16 September 2013
  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
    1,011 B (164 words) - 12:46, 16 September 2013
  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
    2 KB (379 words) - 12:47, 16 September 2013
  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
    2 KB (292 words) - 12:27, 16 September 2013
  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
    1 KB (199 words) - 12:31, 16 September 2013
  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
    881 B (135 words) - 12:31, 16 September 2013
  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
    847 B (132 words) - 12:46, 16 September 2013
  • Also, I am confused about what is needed to define a Fourier series in DT as opposed to CT.
    242 B (50 words) - 16:13, 7 October 2008
  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
    1 KB (240 words) - 12:45, 16 September 2013
  • I feel that computing Fourier Transform of summation problem.
    108 B (16 words) - 17:25, 7 October 2008
  • The concept that I seem to struggle with is how to correctly compute the Fourier Series.
    88 B (16 words) - 17:25, 7 October 2008
  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
    1 KB (188 words) - 12:33, 16 September 2013
  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • It was too hard to get fourier transform of summation term.
    97 B (16 words) - 18:19, 7 October 2008
  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • For instance, O/W 4.21 has a number of Fourier transforms we are supposed to compute. The setup is typically straightforw
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • By the properties of integrating an absolute value and the linearity of the Fourier transform. Apply the inverse fourier transform integral:
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • ...cept of a CT Fourier transform. When it is in DT it is easy to express the Fourier coefficients. We just need to express all the coefficients in one period. B
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  • Im having difficulty with D.T. Fourier Transforms
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  • Fourier Transforms and the frequency response of a system. ...response has a fundamental relationship to the unit step response through Fourier Transforms as follows
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • I agree with Brian in the sense that CT fourier transforms are pretty straight forward when you set up them up with the int
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  • ...ned the analogy that a vector is to its components as a function is to its fourier series, but I don't know what these transforms are showing.
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • Fourier Series Transformation - I had problems in determining which frequency is th Fourier Transform -
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • I am having difficulty understanding what do the Fourier coefficients really represent.. I know how to compute them in both dt and c
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • 4. Compute the coefficients <math>a_{k}</math> of the Fourier series of the signal x(t) with period T = 4 defined by
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • I still have difficulty calculating Fourier Transform coefficients.
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • [[Category:Fourier transform]] == Example of Computation of Fourier transform of a CT SIGNAL ==
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • [[Category:Fourier transform]] [[Category:inverse Fourier transform]]
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  • ...in determining whether a signal is stable or unstable,besides calculating fourier coefficients.
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  • '''4.''' Compute the coefficients <math>a_k</math> of the Fourier series of the signal <math>x(t)</math> periodic with period <math>T=4</math
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  • Compute the coefficients <math>a_k</math> of the Fourier series of the signal <math>x(t)</math> periodic with period <math>T=4</math Next, we procede to calculate <math>a_k\,</math> Notice that the fourier transformation of a square signal is made up from sin waves with infinite n
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  • 4. Compute the coefficients <math>a_{k} \!</math> of the Fourier series signal <math>x(t) \!</math> periodic with period <math>T = 4 \!</mat
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  • '''4.''' Compute the coefficients '''<math>a\ _k</math>''' of the Fourier series of the signal '''<math>x\ (t)</math>''' periodic with period '''<mat
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  • Compute the coefficients <math>a_k</math> of the Fourier series of the signal <math>x(t)</math> periodic with period <math>T=4</math
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  • Compute the coefficients <math>a_k</math> of the Fourier series of the signal x(t) periodic with period T = 4 defined by
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  • #REDIRECT [[CT Fourier Pair 3 signal_ECE301Fall2008mboutin]]
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  • 4. Compute the coefficients <math>a_k</math> of the Fourier series of the signal x(t) periodic with period T=4 defined by
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  • '''Question:''' Compute the Fourier transform of the signal x(t) equal to: The Fourier Transform of a signal in Continuous Time is defined by:
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  • '''Question:''' Compute the Fourier transform of the signal
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  • * [[David Record - Fourier Transform Quiz Explanation _ECE301Fall2008mboutin]] * [[Fourier Transform of x(at+b) when the transform of x(t) is known_ECE301Fall2008mbou
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  • [[Category:Fourier transform]] Compute the Fourier Transform of <math>x(t)=e^{-t}u(t)</math>.
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  • ...tacked the right way: taking the inverse Fourier transform, instead of the Fourier transform. The explanation is crystal clear and logical. No important step ...d function. The Transformed output is a imaginary and even signal,thus the Fourier transform is wrong.
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  • ...ing for the exam that is coming up is to remember that you cannot take the fourier transform of a signal using the table in the book when the signal is in CT here we use the shifting property in the table to determine the fourier transform
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  • == Explanation of Wednesday October 22nd In-Class Quiz on Fourier TRansform== ...that had been time inverted and time shifted by using the definition of a Fourier Transform. The quiz consisted of two very similar questions. The first was
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  • ...st? Not being sure, perhaps it would be better to use the definition of a Fourier transform to solve this.
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  • == Brief explanation about Fourier Transform == for the CT Fourier Transform, there are two important formulas that we have to know which are
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  • We can solve by the definition of a Fourier Transform
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  • ...fference equation of the above form, one can apply simple mathematical and Fourier Transform properties to get an equation of the form
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  • Without thinking, you rush into the problem using the definition of the Fourier Transform...
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  • ...expansion allows us to fit functions to the known ones given by the known Fourier Transform pairs table.
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  • 1) Take the fourier transform of every term: Now finally to find <math>\,h[n]</math>, take the inverse Fourier Transform:
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  • Now suppose the input signal was multiplied by a cosine wave then the fourier transform of the wave would look as follows
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  • First, we do the Fourier transform on both sides, which yields:
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  • ...ms so I thought it would be a good idea to do some examples of how to do a Fourier Transform to help clarify the process. Using the Fourier Transform Equation:
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  • ==Continuous Time Fourier Transform Pair for Aperiodic and Periodic Signals== The Fourier transform exists if the signal is absolutely integrable or if the signal ha
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  • '''Proof''': Differentiating the inverse Fourier Transform <math>X(\omega) \,\ </math> with respect to t we get.
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  • This page will show how to compute the Fourier transforms of CT and DT signals that have a power of absolute value (e.g. <
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  • == CT Fourier Transform == *[[CT Fourier Transform_ECE301Fall2008mboutin]] {{:CT Fourier Transform}}
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  • == Multiplication Property of Fourier Transforms ==
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  • Fourier Transform of delta functions
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  • Then the Fourier Transform: Then the Fourier Transform:
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  • Consider <math>x(t)\,</math> as a signal with Fourier transform of <math>X(\omega)=0</math> when <math>|\omega|>\omega_m</math>.
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  • This answer can be found simply by using the Fourier Transform of the <math>X_p(\omega) </math>.
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  • ...t a continuous-time signal and X(j<math>\omega\,</math>) be the continuous Fourier transform of that signal. Then,
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  • ...present a continuous-time signal and <math>X(W)\,</math> be the continuous Fourier transform of that signal
    2 KB (303 words) - 10:24, 10 November 2008
  • ...present a continuous-time signal and <math>X(w)\,</math> be the continuous Fourier transform of that signal (which exists if <math>x(t)\,</math> is square-int
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  • Taking the Fourier Transform of this function yields,
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  • #REDIRECT [[CT Fourier Pairs 11_ECE301Fall2008mboutin]]
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  • so <math>y(t)=x(t)c(t)</math>. Then by taking the Fourier Transform of both sides of this equations yields <math>y(\omega)</math>. Al
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  • As you can see, this is very similar to the Fourier Transform. In fact, the Fourier Transform is just the restriction of the Laplace transform to the imaginary As you can see, this is nearly the same as a time shift in Fourier Transforms.
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  • then the fourier transform of the wave would look as follows
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  • ...or <math>|{\omega}| > \omega_M</math> where <math>X(j\omega)</math> is the Fourier Transform of the signal we are sampling. This means that <math>X(j\omega)< ...they would interfere with eachother and make something new so when Inverse Fourier Transforming the signal you would not get back the original signal.
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  • taking the fourier transform
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  • This is most easiest performed in the frequency domain with Fourier transforms. To most easily find <math>h_2(t)</math>, make sure that :
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  • ...(s) </math> consists of those <math> s = a + j\omega </math> for which the Fourier Transform of <math> x(t)e^{-at} </math> converges.
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  • fourier ====>
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  • * [[HW10 Daniel Barjum: Example illustration relationship between Fourier and Laplace transform_ECE301Fall2008mboutin]]
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  • Why? The ROC of X(s) consists of those <math>s=a+j\omega</math> for which the Fourier transform of <math>x(t)e^{-at}</math> converges. This condition only depend
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  • However, the Fourier Transform <math> X(jw) </math> is on pure imaginary axis.
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  • ==Fourier transform== The continuous Fourier transform is equivalent to evaluating the bilateral Laplace transform with
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  • ...ad of considering only the imaginary axis, <math>j\omega\!</math>, (as the Fourier Transform does) the Laplace Transform considers all complex values represen Fourier Transform: <math>x(t) --> X(\omega)\!</math> where <math>\omega\!</math>
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  • == relationship to fourier transform == The continuous Fourier transform is equivalent to evaluating the bilateral Laplace transform with
    3 KB (438 words) - 16:26, 24 November 2008
  • == The relationship between Fourier and Laplace transform == The continuous-time Fourier transform provides us with a representation for signals as linear combinati
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  • [[Category:Fourier transform]] [[Category:relation between Laplace transform and Fourier transform]]
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  • In a nutshell Laplace transform is a generalization of Fourier transform. Laplace transforms can be applied to the analysis of many unstab
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  • ...omega}\!</math> with <math>\omega\!</math> real, this summation equals the Fourier Transform of <math>h[n]\!</math>. When <math>z\!</math> is not restricted == Relationship between Z-Transform and Fourier Transform ==
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  • In order to get further insight into the relationship between the Fourier Transform and the Z-Transform it is useful to look at the complex plane or ...ourier transform as the z-transform on the unit circle, the periodicity of Fourier transform is easily seen.
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  • CT Fourier Transform Pair DT Fourier Transform Pair
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  • ...s the more general case of the discrete-time Fourier transform. For the DT Fourier transform <math>z = e^{j\omega }</math> with <math>\omega</math> real <math
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  • ...transforms, bi-lateral Laplace transforms, Z transforms, and discrete time Fourier transforms and an ability to compute the transforms and inverse transforms ===[[Chapter 3_ECE301Fall2008mboutin]]: Fourier Series Representation of Period Signals===
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  • ...</math> and if <math> \sigma = 0 </math> then this equation reduces to the Fourier Transform of <math>x(t)</math>. Indeed, the LT can be viewed as the FT of t
    5 KB (911 words) - 07:54, 8 December 2008
  • ...etermine if x(t) is band-limited, one must exam <math>X(\omega)</math> the Fourier transform of x(t).
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  • By the properties of integrating an absolute value and the linearity of the Fourier transform.
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  • Apply the inverse fourier transform integral:
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  • Find the inverse Fourier transform of:
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  • ...ed to try and see if he could apply a mathematical calculation known as '''Fourier transform''' to solve the Beatles’ riddle. The process allowed him to dec
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  • ...ok at Rose-Hulman. It was called Boundary Value Problems. We worked with Fourier Series and all that fun stuff. It was actually pretty fun. We used maple
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  • = Fourier Properties = The fourier transform of the comb function is the [[rep function_Old Kiwi]].
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  • ...nce of Gaussian noise on both x and y. In some cases, PCA corresponds to a Fourier transform, such as the DCT used in JPEG image compression.
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  • * [[Fourier Transform_Old Kiwi]]
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  • ==Fourier Series== [[Fourier Series(3.6)_Old Kiwi]]
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  • DT Fourier Series
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  • [[Convergence of Fourier Transforms_Old Kiwi]] [[Fourier Transform table_Old Kiwi]]
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  • Note: I can not find a way to display a proper fourier symbol, so I went with the <math>\quad\displaystyle{\bf{F}} </math> as seen ...al since, it becomes clear that it is only necessary to take the dual of a Fourier Transform Pair once. After taking the dual once, one might as well use tim
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  • * [[Fourier, Laplace and Z-Transform Equation Reference Sheet_Old Kiwi]]
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  • ...a real periodic sequence with fundamental period <math>{N}_{0}</math> and Fourier coefficients <math>{c}_{k}={a}_{k}+j{b}_{k}</math> where ak and bk are both If <math>x[n]</math> is real we have (equation for Fourier coefficients):
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  • 1: Take the Fourier transform ([Meaning of Fourier Transform]) of the equation, ...sion ([Guide to Partial Fraction Expansion]) to facilitate use of inverse Fourier transform,
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  • Taking the inverse Fourier transform of the frequency response, we obtain
    4 KB (683 words) - 21:46, 6 April 2008
  • ...nce of Gaussian noise on both x and y. In some cases, PCA corresponds to a Fourier transform, such as the DCT used in JPEG image compression.
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  • ##[[Fourier Series representation of continuous-time periodic signals_Old Kiwi]] ##[[Fourier Series Representation of CT periodic signals_Old Kiwi]]
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  • ...expansion allows us to fit functions to the known ones given by the known Fourier Transform pairs table.
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  • Determine the Fourier Series co-efficient for the following continuous time periodic signals.Show
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  • 1)a)If a discrete time singal x[n] is periodic with period N, then the Fourier series coefficients <math>a_k</math> of the signal x[n] is also periodic wi ...er a continuous-time periodic signal x(t) with period T = 5 whose non-zero Fourier series coefficients <math>a_k</math> are given by
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  • *Fourier Series ** PM's discussion of Linear algebra and Fourier series: pp. 232-240, 247-253, 399-409,
    9 KB (1,237 words) - 09:29, 5 October 2009
  • [[Fourier Optics]] --[[User:mamitche|mamitche]] [[Speech_Spectrogram|Fourier Analysis of Human Speech]] -- [[User:crtaylor|crtaylor]]
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  • [[Category:discrete Fourier transform]] == DFT ( Discrete Fourier Transform ) ==
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  • ...e exam will cover all material covered ''since'' the Midterm (including CT Fourier Transform). A list of topics include * CT Fourier Transform
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  • * [[MA 598R pweigel Summer 2009 Lecture 7|Problem Set 7 - Convolutions and Fourier Transforms]]
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  • Fourier Analysis Video, This guy is loud and excited and talks fast, just to warn
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  • ...pages descriptive to their content while still including your name, e.g. [[Fourier Transform - Landis Huffman]]
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  • Add your contributions to the [[Fourier Properties]] page.
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  • '''''Linearity'' - Property of Continuous Time Fourier Transform'''
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  • ==Multiplication Property of Continuous - Time Fourier Series== ...so periodic with period '''T''', we can expand it in a Fourier series with Fourier series coefficients '''<math>h_k</math>''' expressed in terms of those for
    583 B (107 words) - 09:20, 8 July 2009
  • If x(t) and X(jt) are a Fourier transform pair, then : ...is known as Parseval's Relation and results from direct application of the Fourier transform :
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  • (The right hand side of this equation is the Fourier transform analysis equation for x*(t))
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  • Aperiodic signal <===> Fourier transform
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  • Time Shifting property of the Fourier Transform
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  • Proving the property of Linearity in Fourier Transform:
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  • ...<math>t_0</math> to created the shifted signal <math>x(t-t_0)</math>, the Fourier series coefficients of the shifted will be <math>a_k e^{-jkw_0t_0}</math>, Let <math>a_k</math> be the Fourier series coefficients of <math>x(t)</math>, so
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  • Suppose z(t) = {ax(t)+by(t)}, then the fourier transform of z is z(w)=d^(-1)/dt((ax(t)+by(t))*exp(-jwt))
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  • By definition of Fourier Transform:
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  • == Continous - Time Fourier Series: Time Reversal == Right-hand side of the equation has the form of a Fourier series synthesis equation for x(-t)
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  • Property: Linearity in Fourier Transform: The fourier transform of ax(t) is the integration of 1/T * (ax(t)*exp(-jwt))
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  • Define a function x(t) with its Fourier transform being X(jw) so '''Fourier transform'''(x(t)') = jwX(jw)
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  • '''== Time Shifting Property of Continuous-Time Fourier Series ==''' <br> The Fourier series coefficients <math>b_{k}</math> of the resulting signal y(t)=x(t-<ma
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  • ...e domain with a multiplication operation in the frequecy domain for easier Fourier transform enalysis
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  • Proving that the Continuous-Time Fourier Transform demonstrates linearity
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  • == Fourier Series == * [[CT Fourier series expansion]]
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  • [[CT Fourier Transform - Xiaodian Xie]]
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  • Fourier Series for discrete time signals.
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  • [[CT Inverse Fourier Transform -- Alex Gaul]]
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  • [[Continuous Time Fourier Transform (CTFT) - Muhammad Aizuddin Zulkifli]]
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  • Discrete Time Fourier Series Coefficients
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  • CT Fourier Series Expansion - Walter Mulflur
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  • [[Discrete Time Fourier Transform Properties (DTFT) - Evan Witkoske]] [[Discrete Time Fourier Transform Properties (DTFT) - Mohammed Almathami]]
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  • then the Fourier series coefficients <math>b_k</math> of the resulting signal y(t) = x(t - < where <math>a_k</math> is the <math>k^{th}</math> Fourier series coefficient of x(t). That is, if
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  • [[Basic Continuous Time Fourier Transforms (CTFT) - Shannon Abrell]]
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  • CT Fourier Transform Properties
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  • [[Category:discrete time Fourier transform]] =DT Fourier Transform Properties=
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  • == CT Fourier Transform (Book chapter 4)== * [[CT Fourier transform]]
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  • ...pages descriptive to their content while still including your name, e.g. [[Fourier Transform - Landis Huffman]]
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  • *Continuous Time Fourier Series (CTFS) **[https://engineering.purdue.edu/~bouman/ece301/notes/pdf2/FourierSeries.pdf Fourier Series Expansion]
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  • ...438, ECE440), bode plots (ECE382), and Laplace transforms (these roll into Fourier Transforms). The second year courses are the ones that count the MOST in yo ...was made minute by [[ECE202]. This course was a good introduction into the Fourier Transform and the frequency domain with the Laplace Transforms. The knowled
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  • [[DT Fourier Transform - William Owens]]
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  • b) As noted, the inverse fourier transform is only equal a.e. to f. Needs more work.
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  • Definition of Fourier Transform:
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  • Define the Fourier Transform to be:
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  • b) From the reverse Fourier Transform we know that <math>f(t)=\int\hat{f}(x)e^{2\pi ixt}dx</math>
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  • The difference between '''Laplace Transforms(L.T.)''' and '''Fourier Transforms(F.T.)''' is that the '''F.T.''', '''X(w)''', of a signal, '''x(t
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  • [[Ryne Rayburn - ECE 301 - DT Inverse Fourier Transform]]
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  • == DT Inverse Fourier Transform ==
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  • Applying an inverse fourier transfom gives <math>f = 0</math> a.e.
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  • Define the Fourier transform of <math>f \in L^1(\mathbb{R})</math> by Applying the definitions of Fourier transform and convolution, followed by Fubini (since <math>f, g \in L(\math
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  • From the Inverse Fourier Transform we clearly see that <math>f\equiv 0</math> a.e.
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  • [[Category:Fourier transform]] 11.) Compute the Fourier transform of <math>H(x) = (4\pi)^{-\frac{n}{2}}e^{-\frac{|x|^2}{4}}, x \in
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  • [[Category:discrete-time Fourier transform]] *The Discrete-time Fourier transform (DTFT) is <math>{\mathcal X}(\omega) = {\mathcal F} \left( x[n] \
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  • * A signal $x(t)$ is absolutely integrable, i.e., its Fourier transform $X(j\omega)$ exists (first Dirichlet condition, assuming the othe
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  • [[Category:discrete time Fourier transform]]
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  • Fourier series. It turns out that ALL of the Fourier coefficients are equal to 1.
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  • [[Laplace/Fourier Transform Comparison -- Yicheng Guo]]
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  • Laplace Transform is an extension of Fourier Transform.
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  • * A knowledge of Fourier series and periodic signals. * An understanding of Fourier transforms for linear time invariant systems and the basics of sampling and
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  • the properties of the Fourier Transform and other stuff. Plus it has proofs! http://fourier.eng.hmc.edu/e101/lectures/handout3/handout3.html
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  • |Homework 6 due – Fourier Series |Exam 2 – LTI system properties; orthonormal transforms; Fourier series
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  • CTFT ( Continuous Time Fourier Transform ) DTFT ( Discrete Time Fourier Transform )
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  • ...ays like to start out with our friendly sine wave. After all, that is what Fourier started with too. ...e, we need to remove the frequency components that correspond to it in the Fourier Domain
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  • *for Question 1, I obtained the Fourier transform in terms of the general zeros and poles, and then replaced, say z ...n - p1), etc. But at any rate, are we supposed to be plotting magnitude of Fourier Transform over 0 to 2*pi radians? I think the directions are very unclear.
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  • ...ated, and one math related. I was thinking of "Why you should cherish the Fourier transform" for EE. Somebody suggested "The future of operating systems" for
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  • ...nformation is conveniently packaged within the complex coefficients of the Fourier Transform. So if it is understood that a sinsuoid must be sampled twice wit ...tation of x(t) with the frequency domain representation of p(t). Since the Fourier Transform of the comb is also an impulse train in the frequency domain, the
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  • ** Examples: the Fourier Transform for Engineering, or perhaps the theory of NP-Completeness for Com
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  • ...h has led to improved signal processing and has led to the use of the Fast Fourier Transform. The Fast Fourier Transform (FFT) can be seen below as the correlation between the incoming a
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  • Taking the Fourier transform of Eq. 3 gives:
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  • This, in Fourier Domain becomes The Fourier Series of this function can be represented as
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  • ==Fourier Analysis and the Speech Spectrogram== ...ch frequency component's contribution to the original signal. Finally, the Fourier Transform is calculated to express these coefficients as a function of freq
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  • [[Category:discrete Fourier transform]] =Notes on Discrete Fourier Transform=
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  • :1) It is band-limited. This means that the Fourier transform of the original signal, also known as the spectrum, is 0 for |f|
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  • == Discrete Fourier Transform == same formula as for discrete fourier series.
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  • '''Note''': The Fourier Transform of a <math> rep_T </math> x(t) gives the comb function of x(t) bu ...ator and rep operator surfaces when we take the operator's Continuous Time Fourier Transform :
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  • ...ate/amplify different frequency components of the signal. Once we have the fourier transform, we can start applying some effects to the sound. ...ipulation has been done to the signal in the frequency domain, the inverse fourier transform is taken and the signal is coverted back to analog to be played t
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  • ==Fourier Transform and its basic Properties:== ===Fourier Transform:===
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  • ...al system. In this article I will go over a simple example of how to use a Fourier transform to describe the diffraction pattern encountered when light passes where 2a is the width of the slit. Now, taking the Fourier transform of the aperture shape we get:
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  • **[[CT Fourier Transform (frequency in radians per time unit)|Continuous-time Fourier Transform Pairs and Properties]] (function of radial frequency- in radians **[[CT Fourier Transform (frequency in hertz)|Continuous-time Fourier Transform Pairs and Properties]] (function of frequency f in hertz) (used i
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  • ...ntensity is under the threshold level.Spectrograms are based on Short Time Fourier Transform(STFT),where the input signal is broken down into blocks and then
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  • ! colspan="2" style="background: #e4bc7e; font-size: 110%;" | Discrete-time Fourier Transform Pairs and Properties ! colspan="2" style="background: #eee;" | DT Fourier transform and its Inverse
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  • [[Category:Fourier transform]] Table of Continuous-time (CT) Fourier Transform Pairs and Properties
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  • =About the Continuous-time Fourier Transform= *[[Examples_ECE301Fall2008mboutin|Example of computation of a Fourier transform]] (from [[ECE301]], Fall 2008)
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  • '''Taking Fourier's torch forward...''' ...e first person that comes to mind when someone says "SIGNAL PROCESSING" is Fourier.
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  • [[Category:continuous-space Fourier transform]] ...[[2D_rect|rect function]] lies in the origin of the image plot and on the fourier transform plot, those DC components should coincide with the center of the
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  • [[Category:continuous-space Fourier transform]] ...gnals is not much different from the one-dimensional (1D) FFT <small>(Fast Fourier Transform - see [http://en.wikipedia.org/wiki/Fast_Fourier_transform])</sma
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  • ...owledge of 2D signals. As a review, let us start from the Continuous-Space Fourier Transform(CSFT) definitons and its inverse transform. ...can be rewritten as <math>\displaystyle f(x,y)=g(x)h(y)</math>; then, its fourier transform is <math>\displaystyle F(u,v)=G(u)H(v) </math>.
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  • [[Category:discrete-space Fourier transform]]
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  • ...to take any courses related to signal processing. Also, your concepts of Fourier and Z transforms should be absolutely clear for signal processing (DSP ECE *In the beginning of this course is mostly about math. Understanding the Fourier transform, Laplace transform, and LTI system will help to understand this c
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  • ...t is much more interesting than the endless [[More_on_CT_Fourier_transform|Fourier transforms]] of ECE301. To attain success: '''go to class!''' Missing a sin ...uation of 301. The first half of the course will be the not so interesting Fourier and Z transforms but the latter part will be real world image and sound pro
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  • If we Fourier Transform the filter, we discover that the filter is linear:
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  • ...of these systems can be found in ME statics and ECE circuit analysis and Fourier transformations. It’s important to do and keep up with all of the homewor ...s class was very helpful for me to understanding ECE 301 materials such as Fourier transforms and matrix calculations. Practice is needed in order to learn th
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  • Discrete Fourier transforms (DFT) Pairs and Properties ...colspan="2" | Discrete Fourier Transform Pairs and Properties [[Discrete Fourier Transform|(info)]]
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  • ...ansform. Discrete-time linear systems: difference equations, Discrete-Time Fourier Transform, bilateral z-Transform. Sampling, quantization, and discrete-time ...transforms, bilateral Laplace transforms, Z transforms, and discrete time Fourier transforms and an ability to compute the transforms and inverse transforms
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  • [[Category:discrete Fourier transform]] In [[ECE301|ECE 301]] students were introduced to the concept of Fourier Transforms. No matter whom you had been taught by it seemed intimidating an
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  • ...ed exercises of Fourier series computations for CT signals]], especially [[Fourier series coefficients student 1|this one]]. ...ecommended exercise Fourier series computation DT|Recommended exercises of Fourier series computations for DT signals]]
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  • *Fourier Series **PM's discussion of Linear algebra and Fourier series: pp. 232-240, 247-253, 399-409,
    9 KB (1,331 words) - 07:15, 29 December 2010
  • ...xercise_Fourier_series_computation|A collective page to practice computing Fourier series of a CT signal]] ...cise_Fourier_series_computation_DT|A collective page to practice computing Fourier series of a DT signal]]
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  • [https://www.projectrhea.org/rhea/images/f/f7/Fourier_series_expansion.pdf Fourier series expansion example] <br/>
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  • In the second lecture, we introduced the CT Fourier transform in terms of frequency "f" and discussed its relationship with the *[[Student_summary_CT_DT_Fourier_transform_ECE438F09|Summary of CT and DT Fourier transforms]]
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  • ...ga|table of CT Fourier transform pairs and properties]], which used the CT Fourier transform in terms of <math>\omega</math> in radians. (You should have seen to obtain a corresponding pair/property for the CT Fourier transform in terms of frequency f (in hertz). In each case, simplify your a
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  • ...ourier transform of the "comb" and "rep" functions. We also defined the DT Fourier transform and computed the DTFT of a complex exponential.
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  • ...with the DTFT. We also computed the z-transform of a signal for which the Fourier transform does not exist. The first student who creates a table of z-transf
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  • ...quency <span class="texhtml">f</span> in hertz per time unit) [[More on CT Fourier transform|(info)]] ...none repeat scroll 0% 0% rgb(238, 238, 238);" colspan="2" | Definition CT Fourier Transform and its Inverse
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  • ...s, that is the idea. But you should also note the similarities between the Fourier transforms (not just the differences). --[[User:Mboutin|Mboutin]] 12:07, 7
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  • [[Category:Fourier transform]] Continuous-time Fourier Transform Pairs and Properties
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  • =How to obtain the CT Fourier transform formula in terms of f in hertz (from the formula in terms of <mat
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  • =How to obtain the Inverse DT Fourier Transform formula in terms of f in hertz (from the formula in terms of <mat
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  • [[Category:Fourier series continuous-time]] = This pages contains exercises to practice computing the Fourier series of a CT signal =
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  • [[Category:Fourier series discrete-time]] =This pages contains exercises to practice computing the Fourier series of a DT signal =
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  • For those of you wishing to brush up on Fourier series, here are two collective study pages: *[[recommended_exercise_Fourier_series_computation|Recommended exercises of Fourier series computations for CT signals]]
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  • =Exercise: Compute the Fourier series coefficients of the following signal:= After you have obtained the coefficients, write the Fourier series of x(t).
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  • ...hip between the poles/zeros of the z-transform and the magnitude of the DT Fourier transform. We also began talking about sampling. It was announced that the
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  • =Exercise: Compute the DT Fourier series coefficients of the following discrete-time signal:= After you have obtained the coefficients, write the Fourier series of x[n].
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  • ...expansion allows us to fit functions to the known ones given by the known Fourier Transform pairs table.
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  • ...zero-order hold. We then begin talking about the relationship between the Fourier transform of a signal x(t) and the sampling
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  • <math>\text{3. Compute the Fourier series coefficients of the following signal:} \,\!</math>
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  • ...ed the relationship between the Fourier transform of a signal x(t) and the Fourier transform of its sampling y[n]=x(nT). We then talked about resampling. More
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  • a) What is the relationship between the DT Fourier transform of x[n] and that of y[n]=x[3n]? (Give the mathematical relation a b) What is the relationship between the DT Fourier transform of x[n] and that of
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  • ...good for you, trust me!) We then obtained the relationship between the DT Fourier transform of <math>x_1[n]</math> and that of an upsampling of x[n] by a fa
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  • ::Look at the reconstruction in the Fourier domain. --[[User:Mboutin|Mboutin]] 10:04, 27 September 2010 (UTC)
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  • [[Category:discrete-time Fourier transform]] =Discrete-time Fourier transform of a window function=
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  • [[Category:Fourier series]] =Exercise: Compute the Fourier series coefficients of the following periodic signal:=
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  • *Fourier series of a continuous-time signal x(t) periodic with period T *Fourier series coefficients of a continuous-time signal x(t) periodic with period T
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  • *Fourier series of a continuous-time signal x(t) periodic with period T *Fourier series coefficients of a continuous-time signal x(t) periodic with period T
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  • Let <math>X_N[k],k=0,...,N-1</math> denote the N point Discrete Fourier Transform (DFT) of the signal x[n],n=0,...,N-1. a. Compute <math>X(e^{j\omega})</math> the Fourier Transform of x[n].
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  • ...tinuous_Space_Fourier_Transform_%28frequences_in_hertz%29|Continuous-space Fourier transform]]
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  • * Understanding Fourier expansions of periodic signals ...uffmalm/FourierApprox.m Approximation of square wave with finite number of Fourier terms]
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  • '''Understanding Fourier expansions of periodic signals''' (from [[ECE301|ECE301]]) ...uffmalm/FourierApprox.m Approximation of square wave with finite number of Fourier terms]
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  • = Discrete Fourier Transform = ...ition: let x[n] be a discrete-time signal with Period N. Then the Discrete Fourier Transform X[k] of x[n] is the discrete-time signal defined by
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  • [[Category:discrete Fourier transform]] = Discrete Fourier Transform =
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  • ...To illustrate the leakage effect, we [[DTFT_Window_Function|looked at the Fourier transform of a window function]].
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  • ...or reconstructing the DTFT of a finite duration signal from the [[Discrete Fourier Transform|DFT]] of its periodic repetition. The formula was observed to hol ...ute Fourier series, as computing DFTs is essentially the same as computing Fourier series coefficients.
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  • Recovering from the first midterm exam, we attacked the Fast Fourier Transform (FFT). More specifically, we illustrated how "decimating by a fac
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  • [[Category:discrete Fourier transform]] Topic: Discrete Fourier Transform
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  • Compute the discrete Fourier transform of the following discrete-time signals: How do your answers relate to the Fourier series coefficients of x[n]?
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  • [[Category:Fourier transform]] == The Continuous Time Fourier Transform (CTFT) ==
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  • ...transform of x(t) and sketch it. Obtain a mathematical expression for the Fourier transform of y[n] and sketch it. Fourier Transform of x(t) = 1
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  • *[[DTFT_Window_Function|Fourier transform of a DT window function]]
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  • [[Category:Fourier transform]] [[Discrete-time_Fourier_transform_info|Discrete-time (DT) Fourier Transforms]] Pairs and Properties
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  • =About the Fourier Tranform of a Rectangular Window in discrete-time= [[Table_DT_Fourier_Transforms|Back to the table of DT Fourier transforms]]
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  • ...nce of Gaussian noise on both x and y. In some cases, PCA corresponds to a Fourier transform, such as the DCT used in JPEG image compression.
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  • [[Category:discrete Fourier transform]] [[Category:Fourier transform]]
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  • Taking the Fourier transform, <br/>
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  • Answer: You will need to note that the Fourier Series converges to the function. After that, you'll need to plug in x=0 and x=1 and notice that the Fourier Series pops out the sum you are after. Page 482 is helpful.
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  • Recall, the Discrete Fourier Transform is defined as follows - ...The DFT of the N samples comprising one period of x[n] equals N times the Fourier series coefficients.
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  • ...'m getting that there is still both a complex part and a real part for the Fourier series. Am I just supposed to write the real part, or am I doing this probl ...is to split the series into two parts since it is not defined for n=0. The Fourier series in problem 9 is:
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  • [[Category:Fourier transform]] Table of Continuous-space (CS) Fourier Transform Pairs and Properties
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  • The second part of the lecture was spent talking about the short-time Fourier transform and sound spectograms. The issue of window function length and sh
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  • ...rum! We finished the lecture by giving a filtering view of the short-time Fourier transform, the proof of which will be given in the next lecture.
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  • *2D Rect function and its Fourier transform *View the Fourier transform of the 2D rect function on [[Student_summary_spectral_analysis_2D
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  • ...alled the "[[:Category:continuous-space Fourier transform|continuous-space Fourier transform]]". [[Category:continuous-space Fourier transform]]
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  • ...s put on understanding how to extent these to the 2D versions of the other Fourier transforms we say (e.g., DTFT and DFT). We also defined some basic 2D signa [[Category:continuous-space Fourier transform]]
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  • ...omega_{2}\mathbf{Y}\right)}f_{\mathbf{XY}}\left(x,y\right)dxdy=\text{2-dim Fourier transform}.</math> Inverse Fourier transform relation:
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  • Taking Fourier Transform on both sides, <br/>
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  • ...h class="inline">\mathbf{X}\left(t\right)</math> , real or complex, is the Fourier transform of the autocorrelation function: ...{\infty}S_{\mathbf{XX}}\left(\omega\right)e^{i\omega\tau}d\omega</math> . (Fourier inversion formula)
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  • ...re solutions. In part c, you're given f(theta), and to solve, you find the fourier coefficients and plug them into (20). Since f(theta) is odd, this is pretty Answer: see page 508 for a Fourier Integral refresher. You are right that it is -inf to inf. Sometimes the in
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  • | align="right" style="padding-right: 1em;" | Short Time Fourier Transform
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  • =About the Multiplication Property of the continuous-time Fourier transform= The multiplication property of the continuous-time Fourier transform can be stated as follows:
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  • [[Category:continuous-space Fourier transform]]
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  • Well, we know that <math>e^{j2\pi f_0 t}</math> is an impulse function in the Fourier domain. Can we guess that this would be a shifted delta? ...inuous_Space_Fourier_Transform_%28frequences_in_hertz%29| Continuous-Space Fourier Transform.]]
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  • ...ost terms cancel and it leaves you with 3 sine terms that then go into the fourier series. Answer: It sounds like you are using Fourier series to get the odd periodic extension of f(x). That is definitely the h
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  • == Continuous Space Fourier Transform of 2D Signals == ...6); font-size: 110%;" colspan="2" | Continuous Space Fourier Transform (2D Fourier Transform)
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  • ...t it is periodic. Which is very convenient to implement DSP methods using Fourier transform.
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  • L=pi in this problem. The given Fourier series for f(x) tells When you square the coefficients of the Fourier series, you get
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  • *Video Extract of a talk by Prof. Joe Havlicek explaining the meaning of the Fourier transform very clearly using music. *Computing the Fourier series coefficients of a CT signal
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  • [https://www.projectrhea.org/rhea/images/f/f7/Fourier_series_expansion.pdf Fourier series expansion example] <br/>
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  • ...t very quickly now, but we will get back to it later once we have seen the Fourier transform.
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  • ...I think that it's always 1, and therefore not periodic, so it doesn't have fourier coefficients. What am I doing wrong? ...d we're hoping you can resolve this. For 2g the function is already in its Fourier series. So to find the a_k values you need to manipulate the exponential te
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  • Obtain the Fourier series coefficients of the following signals. What is the Fourier series for each of the signals in Question 2?
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  • ...ll_2007_mboutin_Common_Questions_on_FS/FT_Answered_By_Mimi|Questions about Fourier transform of periodic signals, answered by Prof. Mimi]] *[[ECE_301_Fall_2007_mboutin_DT_Fourier_Series_in_Matlab|DT Fourier series with a single command in MATLAB]]
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  • *[[CT Fourier Transform (frequency in radians per time unit)|Continuous-time Fourier Transform Pairs and Properties]] (function of <span class="texhtml">ω</spa *[[Table DT Fourier Transforms|Discrete-time Fourier Transform Pairs and Properties]]
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  • ...ting cosine/sine as a Fourier series, we are effectively writing out their Fourier series.
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  • ...number of terms. Next lecture, I will give examples of computations of DT Fourier series coefficients. It still not be a bad thing if you tried the correspo *Solve the Practice problems on the Fourier series computation
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  • [[Category:Fourier series]] = [[:Category:Problem_solving|Practice Question]] on Computing the Fourier Series coefficients of a sine wave=
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  • = [[:Category:Problem_solving|Practice Question]] on Computing the Fourier Series coefficients of a discrete-time (sampled) cosine wave = Obtain the Fourier series coefficients of the DT signal
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  • [[Category:Fourier series]] = [[:Category:Problem_solving|Practice Question]] on Computing the Fourier Series continuous-time signal=
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  • = [[:Category:Problem_solving|Practice Question]] on Computing the Fourier Series discrete-time signal = Obtain the Fourier series the DT signal
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  • ...should remember that there are two different methods for computing the DT Fourier series coefficients. One is very quick but only applies when you can figure *Practice computing DT Fourier series: Two practice problems are posted already. Let me know if you need m
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  • = Table of CT Fourier Series Coefficients and Properties = == Some Fourier series ==
    2 KB (419 words) - 10:52, 6 May 2012
  • *[[CT_Fourier_series_practice_problems_list|Problems on continuous-time Fourier series]] *[[CT_Fourier_transform_practice_problems_list|Problems on continuous-time Fourier transform]]
    12 KB (1,768 words) - 10:25, 22 January 2018
  • ...ible to compute; this was exemplified when we tried to compute the inverse Fourier transform of the constant function 1. *Solve the following practice problem on CT Fourier transform.
    1 KB (161 words) - 14:12, 28 February 2011
  • = [[:Category:Problem_solving|Practice Question]] on Computing the Fourier Transform of a Continuous-time Signal = Compute the Fourier transform of the signal
    1 KB (197 words) - 10:25, 11 November 2011

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Questions/answers with a recent ECE grad

Ryne Rayburn