User Jason R

169 votes

Accepted

What is meant by a system's "impulse response" and "frequency response?"

answered Oct 30, 2011 at 5:15

79 votes

What is the difference between a Fourier transform and a cosine transform?

answered Aug 17, 2011 at 1:22

47 votes

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What is the difference between convolution and cross-correlation?

answered Jun 19, 2012 at 21:37

46 votes

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What is the physical meaning of the convolution of two signals?

answered Oct 20, 2012 at 20:12

43 votes

What is the sparse Fourier transform?

answered May 8, 2012 at 12:57

41 votes

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Is there a technical term for this simple method of smoothing out a signal?

answered Nov 1, 2016 at 19:20

38 votes

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What is the cut-off frequency of a moving average filter?

answered Jul 18, 2013 at 14:09

35 votes

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What is the difference between PSD and squared magnitude of frequency spectrum?

answered Oct 16, 2012 at 13:25

27 votes

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What effect does a delay in the time domain have in the frequency domain?

answered Oct 26, 2011 at 13:44

26 votes

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low pass filter and FFT for beginners with Python

answered Nov 29, 2011 at 13:41

26 votes

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Intuitive explanation of cross-correlation in frequency domain

answered Apr 20, 2015 at 12:38

25 votes

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Why do we say that "zero-padding doesn't really increase frequency resolution"

answered Nov 8, 2013 at 16:21

25 votes

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"Complex sampling" can break Nyquist?

answered Nov 20, 2011 at 15:39

22 votes

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Converting frequency from $\textrm{Hz}$ to radians-per-sample

answered Feb 20, 2013 at 12:49

21 votes

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FIR filter gain

answered Oct 16, 2012 at 15:51

19 votes

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How to Generate Band Limited Gaussian White Noise in MATLAB?

answered Jun 19, 2013 at 23:18

17 votes

How to estimate a transfer function from a magnitude-only frequency response?

answered May 24, 2012 at 5:44

16 votes

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When to use EKF and when Kalman Filter?

answered Aug 16, 2012 at 12:30

15 votes

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Fourier transform of cosine to the power of 3

answered Nov 19, 2012 at 20:21

15 votes

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How to estimate and compensate for doppler shift in wireless signals?

answered Oct 14, 2011 at 16:42

14 votes

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How does cascading biquad sections for higher order filters work?

answered Sep 12, 2011 at 14:11

13 votes

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How to implement a digital oscillator?

answered Aug 29, 2011 at 18:44

13 votes

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Should the input of a Kalman filter always be a signal and its derivative?

answered Sep 22, 2011 at 12:24

13 votes

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What happens if we change the limits of integral in Fourier transform?

answered Dec 15, 2012 at 20:56

12 votes

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What data should I use to test an FFT implementation, and what accuracy should I expect?

answered Nov 12, 2011 at 5:08

11 votes

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"Low-pass filter" in non-EE, software API contexts

answered Dec 21, 2011 at 18:31

11 votes

Matlab plot of QPSK system doesn't agree perfectly with theoretical BER curves

answered Jan 20, 2012 at 15:15

11 votes

Where can I get an open source implementation of the Parks-McClellan optimal FIR filter design algorithm?

answered Aug 21, 2011 at 18:23

11 votes

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how does this equation correspond to smoothing?

answered Oct 18, 2012 at 1:32

11 votes

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Is a leaky integrator the same thing as a low pass filter?

answered Aug 22, 2012 at 23:13

Stack Exchange Network

370 Answers

What is meant by a system's "impulse response" and "frequency response?"

What is the difference between a Fourier transform and a cosine transform?

What is the difference between convolution and cross-correlation?

What is the physical meaning of the convolution of two signals?

What is the sparse Fourier transform?

Is there a technical term for this simple method of smoothing out a signal?

What is the cut-off frequency of a moving average filter?

What is the difference between PSD and squared magnitude of frequency spectrum?

What effect does a delay in the time domain have in the frequency domain?

low pass filter and FFT for beginners with Python

Intuitive explanation of cross-correlation in frequency domain

Why do we say that "zero-padding doesn't really increase frequency resolution"

"Complex sampling" can break Nyquist?

Converting frequency from $\textrm{Hz}$ to radians-per-sample

FIR filter gain

How to Generate Band Limited Gaussian White Noise in MATLAB?

How to estimate a transfer function from a magnitude-only frequency response?

When to use EKF and when Kalman Filter?

Fourier transform of cosine to the power of 3

How to estimate and compensate for doppler shift in wireless signals?

How does cascading biquad sections for higher order filters work?

How to implement a digital oscillator?

Should the input of a Kalman filter always be a signal and its derivative?

What happens if we change the limits of integral in Fourier transform?

What data should I use to test an FFT implementation, and what accuracy should I expect?

"Low-pass filter" in non-EE, software API contexts

Matlab plot of QPSK system doesn't agree perfectly with theoretical BER curves

Where can I get an open source implementation of the Parks-McClellan optimal FIR filter design algorithm?

how does this equation correspond to smoothing?

Is a leaky integrator the same thing as a low pass filter?