Signal Processing Questions, Problems & Solutions : TransWikia.com ~ Page 16

My 3x3 Weighted Median Filter doesn't seem to be improving my image quality

In order to reduce noise in my training dataset,I attempted a WMF whose weights are shown in a 2-D array as follows(values finally get normalized by division by 15:[1...

Asked on 01/15/2021 by Mr. Johnny Doe

2 answer

Determine the haar wavelet function is linear or nonlinear

I'm looking for analytical justification of linearity or non linearity of the wavelet transform with the real Haar mother wavelet function. I have googling already. But I can't find and...

Asked on 01/14/2021 by AMEER

2 answer

DCT and Convolution, [1994, Martucci]

I am really trying to digest this paper, but the more I read it again, the more I realize that I never fully understood it. Basically, I...

Asked on 01/14/2021 by Eduardo Reis

0 answer

Help in LBG Vector Quantization - Splitting Factor

I'm currently making a program for speech recognition. In the step of codebook generation using the LBG (Linde-Buzo-Gray) algorithm, I've read that the splitting factor $varepsilon = 0.01$ (generally)...

Asked on 01/13/2021 by an6

0 answer

What is the value range of log magnitude spectrograms?

I'm quite new to this field and have a probably rather basic question:Is there an upper bound for the values in a log-magnitude spectrogram generated like this:log1p(abs(stft(signal) **...

Asked on 01/10/2021 by tmueller

2 answer

How to compute autocorrelation with exponential IIR filter efficiently

I have a discrete dataset (called V). I want to compute the autocorrelation of V at multiple time horizons. Normally I know that I can use the IFFT of the...

Asked on 01/08/2021 by James Pinkerton

0 answer

How to reduce latency under mean filter for high noise?

We have a position sensor that under some conditions receives some high frequency noise. We can eliminate that very well with a simple mean filtering. ...

Asked on 01/08/2021 by Christopher Oezbek

3 answer

Calculating DTFT

When calculating DTFT of (1/2)^n u[n]. We evaluate the sum as follows: Please correct statements and answer questions below: 1) So to go from...

Asked on 01/04/2021

1 answer

On generalizing Gabor-Heisenberg uncertainty in a noisy environment

The Gabor-Heisenberg uncertainty represents the fundamental limit of time and frequency resolution one can extract from a signal. $sigma_t sigma_f geq frac{1}{4pi}$ My question is: what happen in a...

Asked on 01/03/2021 by pierebean

1 answer

Is the phase difference between recorded sounds from left and right ear the same as the phase difference between their HRTF?

Pardon my ignorance if my question is silly. Lets say I did a binaural recording and found the phase difference between right and left channel. If the recording was done...

Asked on 01/01/2021 by Atra Es

1 answer

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