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Signal Processing : Recent Questions and Answers

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

How to compand an OFDM signal?

Im trying to run a simulation of an OFDM system with convolutional coding and u-law compander on MATLAB. The problem is I dont know how to compand the OFDM signal....

Asked on 01/06/2022 by user150011

1 answer

Designing appropriate filter by choosing values for $A$ and $B$

Let $$y[n] - ABy[n-1] +A^2y[n-2] = x[n] - Bx[n-1] +x[n-2]$$Where $A$ and $B$ are constants. Also there are two sounds which have $400$ hertz noise...

Asked on 01/06/2022

2 answer

Does it make sense to have complex numbers representing real-world audio signals?

In this course (Coursera: Audio Signal Processing for Music Applications) the professor uses an example of obtaining the DFT of a complex sinusoid: begin{align}x_2[n]&=e^{jmathleft(2pi f_0 n+varphiright)}quad textrm{for}quad...

Asked on 01/04/2022 by GrowinMan

6 answer

Homography for (small baseline) Stereo Image Registration

If the distance between two stereo cameras (baseline) is much smaller than the distance to the geometry, is it possible to align the resulting two stereo images using a homography?...

Asked on 01/04/2022 by cvNerd

1 answer

farrow resampler in timing recovery

My receiver contains: AGC,timing recovery,carrier recovey blocks. I am using gardner timing recovery with loop filter and farrow parabolic filter.The input to the farrow filter is the fractional delay....

Asked on 01/04/2022

1 answer

Continuously changing pitch of stable-pitch audio sample

I have an 44100-rate 4 second sample of a legato violin playing at 440 Hz. I would like to modulate this sample so that it starts at 440 Hz,...

Asked on 01/04/2022

1 answer

Is resizing of frequency spectrum a valid method of resampling?

One method of resampling is to perform a Fourier Transform on a signal, resize the resulting frequency spectrum, and then return to the resampled version of the signal with an...

Asked on 01/02/2022

1 answer

Having Problem about DownConversion

I hope, you are doing well. I want to ask question about baseband conversion. Background:I generated two AM signals in MATLAB, which one of them is shifted in time.I multiply...

Asked on 12/31/2021 by user26052

1 answer

Respiration (breathing) signal movement artifact removal

Situation: I have breathing data of participants who have done different things during the study which caused their breathing change; watching...

Asked on 12/31/2021 by parpar

1 answer

What is the best to confirm that the output of a matched filter for a linear FM chirp is correct?

I have written a matched filter in matlab to compress a linear FM chirp signal and would like to confirm that the results of my range compression. My question is...

Asked on 12/31/2021

2 answer

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