Signal Processing Weekly Newsletter

Signal Processing newsletter

Top new questions this week:

Convex optimization in signal processing

In signal processing, convex optimization plays a useful role in problems such as sparse signal recovery and filter design. What other places does convex optimization appear? For example, in ...

computer-vision algorithms reference-request optimization  
asked by curiousStudent 3 votes
answered by David Wurtz 4 votes

Advantage of using FIR Polyphase Decimator over just computing FIR output every D samples

Let's say you want to implement an FIR filter $h[k]$ with $L$ taps and downsample the output: $v[k] = x[k] * h[k]$ $y[m] = v[kD]$ The "naive" way would be to compute all the samples of $v[k]$, then ...

filters decimation fir  
asked by roberto 2 votes
answered by David 0 votes

Does scaling property imply superposition?

For a system to be linear,it follow the principles of scaling and superposition.Does scaling imply superposition?If so why are two different conditions given for linearity?If not can u specify an ...

linear-systems signal  
asked by skt9 1 vote
answered by Laurent Duval 1 vote

Spatial resampling, how to smooth?

Sorry if this is not the right forum. Having a velocity grid in which a wave propagates, and given a certain spatial sampling of the grid, what kind of smoothing/interpolation should be used if the ...

smoothing resampling spatial  
asked by user1641496 1 vote

Image segmentation: Grabcut versus Level-set

Checking the literature about image segmentation, if I am not wrong, there are two main approaches: Variational approach e.g. level-set optimization in Chan-Vese Combinatorial approach e.g. using ...

image-segmentation  
asked by mushin 1 vote

applying single pole filter to simple signal

How to apply single pole filter to simple signal fs = 500; ts = 1/fs; t = 0:ts:1-ts; fc = 50; S = cos(2*pi*fc*t);

matlab fft filters signal-analysis  
asked by Urban_Yogi 1 vote
answered by Brian 0 votes

What does "A Target with Zero Doppler" Mean?

I have seen several references to target at zero Doppler and some simulations that command users to place a target at zero Doppler. I know that when a target is flying tangential to the signal the ...

algorithms  
asked by user16612 1 vote
answered by jeremypatterson 2 votes

Greatest hits from previous weeks:

How to mimic/copy/fake someone's voice?

Is there any existing application to sample someone's voice and use it to modulate any other voice or synthesize a text to resemble the original one? For example, this Text-to-Speech Demo by ...

modulation voice  
asked by clapas 4 votes
answered by pichenettes 8 votes

How do I implement cross-correlation to prove two audio files are similar?

I have to do cross correlation of two audio file to prove they are similar. I have taken the FFT of the two audio files and have their power spectrum values in separate arrays. How should I proceed ...

audio fft waveform-similarity cross-correlation  
asked by Warrior 32 votes
answered by endolith 22 votes

Can you answer this?

Translation invariance in max-pooling and cascading with convolutional layer

I am reading through this page about convolutional neural networks and I am confused about the part about max-pooling (downsampling a signal/image with the maximum value in a block). Apparently, one ...

image-processing computer-vision convolution downsampling  
asked by gsmafra 1 vote
Subscribe to more Stack Exchange newsletters


Unsubscribe from this newsletter or change your email preferences by visiting your subscriptions page on stackexchange.com.

Questions? Comments? Let us know on our feedback site. If you no longer want to receive mail from Stack Exchange, unsubscribe from all stackexchange.com emails.

Stack Exchange, Inc. 110 William St, 28th Floor, NY NY 10038 <3