[linux-audio-dev] Re: Looking for fast integer resampling code

Dave Chapman: I recently did a lot of benchmarking between libsamplerate and mus_src in clm/sndlib. My result was quite interesting, the fastest mus_src sinc resampler where a lot faster than the fastest libsamplerate resampler. I don't have the results available right now, but I remember that mus_src performance wasn't very far from beating the linear resampler in libsamplerate. I did a lot of test with various types of data and compiler-options, so I don't think it was a coinsidence. However, it might have been because of some optimalization gcc was doing or something to do with the cache. The mus_src code is far smaller and easier to read than the one for libsamplerate. I did not hear any difference in soundquality, but I guess there might be a difference. Sndlib: http://ccrma.stanford.edu/software/snd/snd/sndlib.html mus_src is available in the file clm.c . libsamplerate: http://www.mega-nerd.com/SRC/ A third program is the original sinc-resampler from Julius Smith: http://ccrma-www.stanford.edu/~jos/resample/ I don't know how this one performs compaired to the other two though. --