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462 B (55 words) - 17:27, 23 April 2013
- ===BRITA Filter: Audio Filtration and FFT Visualizer=== ...ss, HPF, LPF, etc) with different Q and cutoff values to achieve the exact filter response desired. Very simple filters, such as the HPF and LPF discussed in6 KB (1,048 words) - 16:58, 24 April 2017
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4 KB (462 words) - 16:35, 10 December 2017
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0 B (0 words) - 23:18, 30 November 2019
Page text matches
- * Increasing filter size improves detection at the expense of localization14 KB (2,253 words) - 12:21, 9 January 2009
- ==[[ECE 301 Fall 2007 mboutin Filter Types|Types of Filters]]== {{:ECE 301 Fall 2007 mboutin Filter Types}}264 B (30 words) - 13:07, 9 December 2008
- | align="right" style="padding-right: 1em;" | Monday || 03/30/09 || Filter bank interpretation and efficient computation of STDTFT ||6 KB (689 words) - 07:59, 2 August 2010
- ...ndow shows the network that has been selected from the query field and the filter panel.4 KB (713 words) - 16:47, 30 November 2011
- *<math>\omega_c</math>: Cutoff frequency of a filter (<math>\omega_c > 0</math>). (For instance, lowpass filters are nonzero in2 KB (406 words) - 11:08, 12 November 2010
- ...mum amplitude one, minimum amplitude zero and period P. The ideal low pas filter is a band that goes from -fc to fc with constant amplitude one. Once filte ...but the digital filter is in the frequency domain. How do you apply this filter? Any ideas are helpful. Thanks!844 B (152 words) - 18:26, 11 February 2009
- ...trum of the rect (which is a sinc). This is effectively a coarse low pass filter to remove high frequency aliased replicas. <br> ...c^2</math> in frequency. This can also be thought of as a coarse low pass filter but with a sharper cutoff than zero-order hold. <br>906 B (143 words) - 12:40, 4 March 2009
- Plot of the frequency response of the average filter: Plot of the frequency response of the filter:950 B (132 words) - 11:52, 28 April 2009
- == Filter Design== ...ise.www.ecn.purdue.edu/VISE/ee438L/lab5/pdf/lab5a.pdf First lab on digital filter design]8 KB (1,226 words) - 11:40, 1 May 2009
- ...mboutin_DFT_windowedfilter|Graph of the magnitude of the DFT of a windowed filter]]7 KB (1,067 words) - 12:05, 25 June 2010
- ...e sufficiently close, then the signal can be reconstructed using a lowpass filter. ...ntinuous curve and represent an interpolation formula for an ideal lowpass filter H(jw):851 B (151 words) - 11:38, 8 November 2008
- ...)</math>, we can simply low-pass filter <math>x_p(t)</math> as long as the filter, ...ath>\omega_m < \omega_c < \omega_s - \omega_m </math>. Also, the low-pass filter must have a gain of <math>T</math>. This can be represented graphically as3 KB (582 words) - 06:11, 16 September 2013
- To recover, first we need a filter with amplited T when |W| < Wc.<br><br>500 B (101 words) - 16:21, 9 November 2008
- To recover, first we need a filter with amplited T when |W| < Wc. <math> x_{p}(t) ---->Filter, H(w) -----> x(t)</math>1 KB (238 words) - 16:44, 9 November 2008
- To recover, first we need a filter with amplited T when |W| < Wc. <math> x_{p}(t) ---->Filter, H(w) -----> x(t)</math>1 KB (238 words) - 05:31, 16 November 2008
- *<math>\omega_c</math>: Cutoff frequency of a filter (<math>\omega_c > 0</math>). (For instance, lowpass filters are nonzero in1 KB (178 words) - 19:31, 23 November 2008
- <math>\omega_c </math> Cut off frequency for a filter Pretty much apply a low pass filter to <math>x_p(t)</math>2 KB (349 words) - 12:09, 10 November 2008
- X(t) can be recovered exactly from Xp(t) by using a low pass filter with gain T and cut off frequency greater than Wm but less than Ws - Wm.1 KB (274 words) - 06:49, 16 September 2013
- ...alled the reconstructed signal <math>x_r(t)</math>, we must use a low pass filter with a gain of T, and a frequency in the range of <math>(\omega_m,\omega_s- We can use a transfer function to approximate this filter, and it is:3 KB (543 words) - 17:23, 10 November 2008
- ...can be used to recover the modulated signal being a common one the low pas filter,1 KB (207 words) - 17:11, 10 November 2008
- ...(t) can be recovered from its sampled version using an appropriate lowpass filter?2 KB (340 words) - 17:29, 10 November 2008
- ...in reality must of course be truncated usually by a low-pass or band-pass filter.548 B (84 words) - 17:56, 10 November 2008
- Where <math>H(\omega)</math> is a filter with gain equal to the period of the signal and a cutoff frequency of <math711 B (130 words) - 19:44, 10 November 2008
- To demodulate, multiply <math> cosw_{c}t </math> and use low pass filter with gain of 2.1 KB (270 words) - 12:35, 16 November 2008
- To recover x(t), use a low pass filter with gain <math> \frac {1}{a_0}=\frac {T}{\delta} </math>, and cut-off freq949 B (174 words) - 16:11, 16 November 2008
- ...m <math>x(t)cos^2(\omega_c t)</math>, we run the signal through a low pass filter with a gain of 2 and cut off frequency <math>\omega</math>. <math>\omega</m2 KB (356 words) - 08:49, 17 November 2008
- <math>\omega_c</math>: Band frequency for the lowpass filter used to recover the original signal from it's samples. Must be greater tha2 KB (279 words) - 12:53, 17 November 2008
- ...signal one of the signals so that it is centered at zero and use a lowpass filter with a gain of 2 and cutoff frequency greater than <math> \omega_m</math> b2 KB (344 words) - 15:55, 30 November 2010
- <math>x(t)\cos^2(\omega_ct)</math> --> a lowpass filter with a height of 2 and <math>\omega_m<\omega_c<2\omega_c-\omega_m</math> --2 KB (336 words) - 17:26, 17 November 2008
- ...constructed function <math>x_r(t)</math> can be recovered using a low pass filter created from the multiplication of the original step function generator <ma ...lution of <math>h_1(t)</math> and <math>h_2(t)</math> represent a low pass filter with a gain of T and a cutoff frequency <math>\omega_c</math> between <math2 KB (411 words) - 17:16, 17 November 2008
- ...by modulating y(t) with the same sinusoidal carrier and applying a lowpass filter to the result. Applying the lowpass filter to w(t) corresponds to retaining the first term, <math>\frac{1}{2}x(t)</mat837 B (153 words) - 19:06, 17 November 2008
- ...er than Wm and less than Ws - Wm. We process this signal through a lowpass filter and receive the output signal that is exactly x(t).805 B (160 words) - 20:06, 17 November 2008
- ...mple values. This impulse train is then processed through an ideal lowpass filter with gain T and cutoff frequency greater than \omega_M and les than \omega_21 KB (3,312 words) - 11:58, 5 December 2008
- ...mple values. This impulse train is then processed through an ideal lowpass filter with gain T and cutoff frequency greater than \omega_M and les than \omega_2 KB (254 words) - 07:05, 8 December 2008
- ...to the central limit theorem this smoothing can be approximated by several filter steps that can be computed much faster, like the simple moving average.10 KB (1,594 words) - 11:41, 24 March 2008
- ...eed a 2D convolution function. So you can take the 2d fft multiply by your filter and invert. However this seems like allot of work, and I have never implime ...hat way. The example file gives you an idea of how to do this for a simple filter. Good luck!10 KB (1,738 words) - 22:44, 7 April 2008
- *Week 7-8: Filtering (Systems defined by Difference equations, Filter Design, DFT view of Filtering) ***Prof. Bouman's lecture notes on digital Filter design: [https://engineering.purdue.edu/~bouman/ece438/lecture/module_1/1.79 KB (1,237 words) - 09:29, 5 October 2009
- *What did you do to apply the lowpass filter? -- [[User:weim|weim]] * firpm(500,... generates a 500 order Parks-Mc Clellen filter of cutoff. MATLAB uses 1 as pi and 1e-12 and 2e-12 are the cutoff freque4 KB (543 words) - 07:02, 25 August 2010
- See also deconv, conv2, convn, filter and, in the signal1 KB (204 words) - 22:28, 1 July 2009
- This can be accomplished either by a band-pass filter OR using the following system.538 B (101 words) - 17:58, 29 July 2009
- ...y modulating y(t) with the same sinusoidal carrier and applying a low pass filter to the629 B (112 words) - 18:18, 29 July 2009
- ...ck market! That's right. It is possible, from simple spectral analysis to "filter" out long-term and short term trends from any time varying data. This inclu * How? LOW PASS FILTER7 KB (1,251 words) - 11:54, 21 September 2012
- ...ess the answer. Am I supposed to take the inverse transform of the digital filter and relate it to time? My final answer would be composed of a lot of rects4 KB (628 words) - 15:47, 30 November 2010
- After Step 3, the signal is ready to be put through a discrete filter. ...s the maximum frequency of the signal equal to the cutoff frequency of the filter and will allow us to determine a sampling frequency that will satisfy the N8 KB (1,452 words) - 06:49, 16 September 2013
- ...y research interests include Signal Processing, (mainly Spectral Analysis, Filter Design and Image Processing), Digital Systems Design and Psychology (sounds2 KB (268 words) - 09:43, 14 May 2010
- ...t this can be applied is in signal reconstruction, where a low pass analog filter is used on the output of a digital-to-analog converter to attenuate unwante ...ained how up-sampling can be used to relax requirements on analog low pass filter design while decreasing signal distortion.5 KB (840 words) - 19:08, 22 September 2009
- ...act, the signal can be reconstructed back by passing it through a low-pass filter with a cut-off frequency of <math> \frac{1}{2T} </math> and a gain of <math3 KB (527 words) - 11:50, 22 September 2009
- To recover the signal, we will require a low pass filter with gain '''<math>T\,\!</math>''' and cutoff, '''<math>\frac{1}{2T}</math>3 KB (484 words) - 09:47, 23 September 2009
- ...ecover the signal, the sampled function is simply multiplied by a low-pass filter with height equal to the sampling period T, <math>{H_r}(f)</math>, to isola ...age:ReconstructFilter.png|500px|thumb|center|Sampled function with lowpass filter]]2 KB (436 words) - 19:51, 22 September 2009
- ...D in the circle is how many zeros we fill between samples and the Low Pass Filter removes the extraneous copies of the signal beyond W/D shown in the output *So, intuitively, we want to use an LPF (low pass filter) to "remove" these high frequency spikes.5 KB (847 words) - 11:54, 21 September 2012
