User Lorem Ipsum

156 votes

Accepted

Why is the Fourier transform so important?

fourier-transform

answered Aug 19, 2011 at 7:50

46 votes

What is the physical significance of negative frequencies?

frequency

answered Oct 15, 2011 at 23:26

35 votes

Accepted

What's the difference between the Hough and Radon transforms?

image-processing computer-vision

answered Oct 21, 2011 at 16:48

32 votes

Accepted

What is meant by "stochastic sampling"?

sampling

answered Aug 20, 2011 at 2:17

28 votes

Accepted

What should be considered when selecting a windowing function when smoothing a time series?

filters window-functions

answered Sep 12, 2011 at 23:44

20 votes

What are good ways to detect signal clipping in a recording?

audio algorithms

answered Aug 18, 2011 at 20:51

16 votes

Accepted

Are there alternatives to the bilinear transform?

continuous-signals discrete-signals transfer-function

answered Aug 26, 2011 at 3:24

16 votes

Accepted

Why is $y(n) = x(n) + x(n-1)$ a low pass filter?

filters lowpass-filter

answered Dec 22, 2011 at 16:11

15 votes

Accepted

How do I add AWGN to an I and Q representation of a signal?

noise gaussian

answered Aug 18, 2011 at 14:21

15 votes

Accepted

What are the proper pre-processing steps to perform Independent Component Analysis?

preprocessing ica

answered Aug 23, 2011 at 7:45

14 votes

Accepted

What are the practically relevant differences between various image resampling methods?

image-processing

answered Nov 25, 2011 at 20:48

12 votes

Accepted

Why does my stop-band filter attenuate other frequencies?

filters matlab

answered May 5, 2012 at 21:18

12 votes

Accepted

How do I detect distinct objects when their edges touch each other?

image-processing edge-detection

answered Dec 5, 2011 at 20:23

12 votes

Detecting Trail in Forest Images

image-processing computer-vision

answered Oct 19, 2011 at 17:50

10 votes

Accepted

What is the difference between Remez exchange and Parks-McClellan filter design?

algorithms filter-design parks-mclellan

answered Sep 13, 2011 at 22:30

10 votes

Detection of a Circle in Noisy Image Data

image-processing matlab computer-vision detection

answered Nov 7, 2012 at 0:05

9 votes

Accepted

Detecting a fixed template image out of a semi-constant frame of video

image-processing algorithms

answered Jan 7, 2012 at 5:50

9 votes

Accepted

Detecting Arabic verses spanning multiple lines

image-processing text-recognition

answered Apr 14, 2012 at 17:12

7 votes

How can one improve the robustness of adaptive beamformers to signal mismatches?

beamforming distortion

answered Sep 22, 2011 at 19:31

7 votes

Accepted

How do I find a system's impulse response from its state-space repersentation using the state transition matrix?

impulse-response state-space linear-systems

answered Aug 30, 2011 at 20:11

6 votes

Accepted

What are the advantages, if any, of derivative sampling?

sampling

answered Sep 5, 2011 at 4:03

6 votes

Can ICA be applied, when the number of mixture signal is less than number of source signal?

ica source-separation

answered Sep 7, 2011 at 4:55

6 votes

What is the relation between the PSDs of filter input and output called? $R_Y = |H|^2R_X$

transfer-function terminology

answered Sep 20, 2011 at 18:31

6 votes

What is the most lucid, intuitive explanation for the various FTs - CFT, DFT, DTFT and the Fourier Series?

fourier-transform fourier-series

answered Nov 14, 2011 at 20:42

5 votes

Accepted

Why are there comb-like hills in a periodogram?

frequency-response

answered Nov 26, 2011 at 4:14

5 votes

Is Ideal LPF BIBO unstable?

filters linear-systems

answered Dec 26, 2011 at 16:32

5 votes

Calculating the PDF of a waveform from its samples

algorithms interpolation audio

answered Sep 10, 2011 at 0:45

4 votes

What are the advantages, if any, of derivative sampling?

sampling

answered Aug 27, 2011 at 0:47

2 votes

Is it numerically more stable to implement filtering as multiplication or convolution?

filters

answered Nov 7, 2011 at 2:02

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29 Answers

Why is the Fourier transform so important?

What is the physical significance of negative frequencies?

What's the difference between the Hough and Radon transforms?

What is meant by "stochastic sampling"?

What should be considered when selecting a windowing function when smoothing a time series?

What are good ways to detect signal clipping in a recording?

Are there alternatives to the bilinear transform?

Why is $y(n) = x(n) + x(n-1)$ a low pass filter?

How do I add AWGN to an I and Q representation of a signal?

What are the proper pre-processing steps to perform Independent Component Analysis?

What are the practically relevant differences between various image resampling methods?

Why does my stop-band filter attenuate other frequencies?

How do I detect distinct objects when their edges touch each other?

Detecting Trail in Forest Images

What is the difference between Remez exchange and Parks-McClellan filter design?

Detection of a Circle in Noisy Image Data

Detecting a fixed template image out of a semi-constant frame of video

Detecting Arabic verses spanning multiple lines

How can one improve the robustness of adaptive beamformers to signal mismatches?

How do I find a system's impulse response from its state-space repersentation using the state transition matrix?

What are the advantages, if any, of derivative sampling?

Can ICA be applied, when the number of mixture signal is less than number of source signal?

What is the relation between the PSDs of filter input and output called? $R_Y = |H|^2R_X$

What is the most lucid, intuitive explanation for the various FTs - CFT, DFT, DTFT and the Fourier Series?

Why are there comb-like hills in a periodogram?

Is Ideal LPF BIBO unstable?

Calculating the PDF of a waveform from its samples

What are the advantages, if any, of derivative sampling?

Is it numerically more stable to implement filtering as multiplication or convolution?