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Fat32
  • Member for 7 years, 4 months
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32 votes
Accepted

“The Fourier transform cannot measure two phases at the same frequency.” Why not?

20 votes
Accepted

Why do digital filters work?

17 votes
Accepted

Why LTI system cannot generate new frequencies?

16 votes

Why is a linear phase important?

10 votes
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Position of poles and Stability in $z$ domain

10 votes
Accepted

What would be the effect of repeating samples in time domain on frequency domain?

10 votes

Why is circular convolution used in DSP? Why not linear convolution?

9 votes

Why should an image be blurred using a Gaussian Kernel before downsampling?

9 votes

A system that perfoms Fourier Transform operation - is it an LTI system?

9 votes
Accepted

Image processing vs Computer vision?

9 votes

Why ideal filter cannot realised practically?

8 votes
Accepted

Scaling property of Fourier Transform

8 votes

Filter design with zero - pole placement method

8 votes
Accepted

Group delay of $H(\omega)= 1- re^{j \theta}e^{ - j \omega} $

8 votes
Accepted

the $L^2$-norm of a signal is also applied as its energy!

7 votes

Why is the impulse response function of this system 0?

7 votes
Accepted

Best "Advanced DSP" book

7 votes
Accepted

Fourier series - time shift and scaling

7 votes
Accepted

Is the system represented by the equation $y(t) = x(2t)$ time invariant?

7 votes
Accepted

Signal processing for audio and speech

7 votes

Applying DFT twice does not actually reverse an array. Instead, the first element stays in place while the rest of the array is reversed. Why?

7 votes
Accepted

Basic Questions on Wiener Filtering

7 votes

A DFT “periodic inputs” question

6 votes
Accepted

Performing DFT twice on an image. Why am I getting an inverted image?

6 votes
Accepted

Practical book in C

6 votes
Accepted

What is the $\mathcal{Z}$-transform of a constant?

6 votes
Accepted

Is the system $y(n)=x(n^2)$ time invariant?

6 votes

How to produce a high-pass filter from a low-pass one?

6 votes
Accepted

Online DFT Algorithm

6 votes

Link between DFS, DFT, DTFT

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