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• Use of Fourier Transforms in MP3 Audio Compression
  ...des the audio signal into smaller pieces, these are called frames. An MDCT filter is then performed on the output. ...1024-point FFT, and then the psychoacoustic model is applied. Another MDCT filter is performed on the output.
  5 KB (752 words) - 17:40, 2 December 2018
• Modulation and Demodulation
  ...mind that when there is a specific frequency channel specified, a Bandpass filter must be added at the end of the pulse train example in order to get the pro ...mind that when there is a specific frequency channel specified, a Bandpass filter must be added in before multiplying by the carrier.
  2 KB (405 words) - 23:42, 2 December 2018
• Use of FFT in MATLAB
  ...find out which frequency is needed, you can use the frequency obtained to filter out other frequencies that creates noise.
  3 KB (555 words) - 22:02, 2 December 2018
• QE2010 CS-2 ECE538
  ...ution of the causal sinewave of length N in Equation (1) with a causal FIR filter of length L, where L < N.<br/>
  8 KB (1,474 words) - 16:37, 24 February 2019
• QE2011 CS-2 ECE538
  ...ters, <math>f_0[n]</math> and <math>f_1[n]</math>,form a Quadrature Mirror Filter (QMF). Specially, <br> The DTFT of the halfband filter <math>h_0[n]</math> above may be expressed as follows:<br>
  4 KB (738 words) - 15:34, 19 February 2019
• QE 2017 CS-5
  e) Describe what ths filter does and how the output changes as <math>\lambda</math> increases.<br>
  2 KB (338 words) - 16:48, 19 February 2019
• 2017CS-5-1
  This is a sharpen filter. The image will become more sharpen as <math>\lambda</math> increases.
  2 KB (282 words) - 11:58, 25 February 2019
• Filtering text on a chalkboard
  ...come hardly visible. The goal of this mini-project was to apply a low pass filter learnt in class and observe its effectiveness in removing the excess chalk ...r (and popular) filters to implement at this scale. Secondly, the low-pass filter is versatile enough to extend applications to any writing on a background,
  7 KB (1,006 words) - 19:22, 7 April 2019
• Filtering Sound with Adobe Audition
  ...spike), we can try to apply something we already know about - a band-pass filter! To do this, we are going to go to '''Effects -> Filter and EQ -> FFT Filter...'''. This will display a simpler Fourier Transform of our signal at a spe
  6 KB (1,077 words) - 20:29, 7 April 2019
• AM SSB and DSM Matlab Exercise
  In both cases, we must first low pass filter each audio file
  1 KB (185 words) - 17:30, 25 April 2019
• 2019 Fall ECE 438 Boutin
  | [[ece438f19achakrabortybonus|Finding the Optimal Filter Size for Median Filtering]] | [[ece438f19mvermabonus|Image Convolution with Different Filter Applications]]
  4 KB (467 words) - 02:18, 10 December 2019
• ECE438 Lab Fall 2019
  *Week 9: [[Media:lab7aECE438F15.pdf| Lab 7a - Digital Filter Design]] - [[Media:lab7agradingrubric.pdf|Lab7a cover sheet with grading ru *Week 10: [[Media:lab7bECE438F19new.pdf| Lab 7b - Digital Filter Design]] - [[Media:lab7bgradingrubric.pdf|Lab7b cover sheet with grading ru
  4 KB (572 words) - 11:16, 3 December 2019
• Lecture Schedule ECE438Fall2019 Boutin
  *** [[Media:lab7aECE438F15.pdf| Lab 7a - First Lab on Digital Filter Design]] *Week 10-(11): Filtering (Systems defined by Difference equations, Filter Design, DFT view of Filtering)
  10 KB (1,356 words) - 18:52, 20 August 2019
• Ece438f19bhelfrechtbonus
  ...cy content from the original signal by first passing it through a low pass filter to ensure the final downsampled signal satisfies the Nyquist criterion. See <math>x_1[n]</math> → Low pass filter with cutoff <math>\frac{𝜋}{D}</math> and gain 1 → Downsample by factor
  16 KB (2,611 words) - 14:11, 12 November 2019
• ECE438f19svezhavebonus
  The Karplus-Strong algorithm uses a noise burst as an initial condition, a filter of the designer's choice, and a positive feedback loop to produce a signal ...s at the bottom of the article show what happens to the output when an IIR filter with poles near an A string's harmonic frequencies is chosen.
  3 KB (546 words) - 23:43, 1 December 2019
• Ece438f19trujillabonus
  ...MATLAB to remove the frequencies above 11 kHz. Next, we design a high-pass filter to remove the frequencies below 7.5 kHz. See the MATLAB code and listen to [[File:batnoisesmatlab.PNG|unframed|MATLAB code used to filter recording of nighttime noises to hear bat noises more clearly]]
  2 KB (280 words) - 23:27, 1 December 2019
• Ece438f19achakrabortybonus
  <big>'''Finding the Optimal Filter Size for Median Filtering'''</big> ...contained salt and pepper noise. This page will demonstrate how the median filter size affects the filtered image in terms of-<br />
  6 KB (1,000 words) - 23:15, 30 November 2019
• Ece438f19mvermabonus
  <big>'''Image Convolution with Different Filter Applications'''</big> ...ically then applied to the image matrix. We add the product of the flipped filter matrix together to get the value of that pixel of the filtered image. This
  4 KB (624 words) - 09:11, 6 December 2019
• Creating your own vowel resonators using tubing
  ...We can therefore model the vocal tract as a series of uniform tubes that filter the signal.
  5 KB (849 words) - 02:10, 10 December 2019
• Walther MA271 Fall2020 topic20
  ...ddition, the transform can detect unwanted periodic patterns in images and filter them out.<br /><br />
  12 KB (2,051 words) - 14:20, 5 December 2020
• Laplace Operator Page 7 2020
  ...g at a decreasing rate (or vice-versa). This process is called the Laplace filter in image processing. The original image, before application of the Laplace filter.
  2 KB (392 words) - 23:11, 6 December 2020
• Laplace Operator Page 8 2020
  ...//docs.opencv.org/3.4/d5/db5/tutorial_laplace_operator.html OpenCV Laplace Filter Image Processing]
  2 KB (242 words) - 00:36, 7 December 2020
• Features of Nyquist's Theorem
  ...ented with a variety of anti-aliasing tools, such as low-pass filters that filter out high frequencies.
  3 KB (444 words) - 23:32, 6 December 2020