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Signal Processing : Recent Questions and Answers (Page 10)

Find answers to your questions about Signal Processing or help others by answering their Signal Processing questions.

Impulse response if initial conditions are given

In most books, impulse response of LTI systems are calculated by assuming initial rest condition, but how to calculate response of an impulse input if there are some initial...

Asked on 10/24/2021

1 answer

Relation between filter order and window length for FIR filter

In case of FIR filter design, is the following relation always applicable or there are other relations/formulas also? If window length is denoted by $M$ ,then filter order will...

Asked on 10/24/2021

1 answer

Demodulating a LoRa data symbol

LoRa integrate data into symbols by selecting the starting frequency of an up chirp. The resulting up chirp traverses across BW and arrives at the same place it started. At...

Asked on 10/24/2021

1 answer

Downsampling and low pass filtering in one step?

Image pyramids are created by applying a lowpass filter (Gaussian) and then decimating the image (keeping only every n'th sample). In The Pyramid as a Structure for...

Asked on 10/24/2021

1 answer

What could be the optimal filter given this situation?

I am using a camera and a Deep Neural Network to predict one angle. This network received as input the frame, and calculates the mean and the variance associated to...

Asked on 10/24/2021

0 answer

SVD vs matched filter

Reading about singular value decomposition (SVD) in the context of signal processing applications, one can separate the signal from the noise into orthogonal subspaces. On the surface this sounds like...

Asked on 10/24/2021

1 answer

Why do people use STFT as a preprocessing step to using CNN?

Just briefly looking up some research papers on audio data and I have come across some papers that use STFT as a preprocessing step to using CNN. Why is this...

Asked on 10/24/2021

0 answer

What's the similarities and differences between Wigner transform and wavelet transform?

Wigner transform and continuous wavelet transform are both some kind of time-frequency representation of a signal. What are the similarities and differences between them? Could you give some comparison between...

Asked on 10/24/2021

1 answer

Normalization of a signal with respect to another signal

Imagine that I gave one signal (call it master signal) with respect to which I would like to normalize all the others. How should I treat it mathematically? Any ideas?...

Asked on 10/24/2021 by Vasilis

2 answer

Get the discrete-time poles and zeros from continuous-time poles and zeros

How do you implement the following function: $$[Z^d, P^d, K^d] = text{fcn} ,(Z^c, P^c, K^c),$$ where $Z^c = [z^c_m, ..., z^c_1]$, $P^c = [p^c_m, ..., p^c_1]$, and...

Asked on 10/24/2021 by shampar

1 answer

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