Benchmarks and code for 1D/2D convolution of real signals

[jeremyfix]

Hi, 

If interested, I did some benchmarks for 1D/2D convolutions of real signals
using various implementations:
- FFT convolution using the GSL or FFTW
- nested for loops
- octave convn, fftconv/fftconv2

All the results and codes are available on github :
https://github.com/jeremyfix/FFTConvolution

Actually the implementation using the FFTW is faster than any of the other
implementations for circular and linear convolutions. For linear
convolutions, I only did benchmarks for the 'same' mode and octave is faster
if the kernel size is smaller than , say 10 x 10 ; 

Best;

Jeremy.

 



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