sign_xcorr

cross-correlation using FFT

Sample program providing an example of cross-correlation using FFT on PCM raw audio files

It will compute the correlation coefficient by normalizing the auto-correlation

make
./signal_xcorr

this app is using

https://github.com/mborgerding/kissfft

extra

https://en.wikipedia.org/wiki/Dynamic_time_warping http://www.speech.zone/exercises/dtw-in-python/recap-of-how-dtw-works/