Re: [music-dsp] Autocorrelation - probably a daft question

2011-01-25 Thread Jan Baumgart
that's perfectly right. When the two signal portions are alike, they are strongly correlated - so you get a maximum value for the correlation. If they have nothing in common you get a correlation value near zero. For pitch detection you look for maxima in the auto-correlation. There's also

Re: [music-dsp] Autocorrelation - probably a daft question

2011-01-25 Thread robert bristow-johnson
On Jan 25, 2011, at 7:34 PM, Jan Baumgart wrote: When the two signal portions are alike, they are strongly correlated - so you get a maximum value for the correlation. If they have nothing in common you get a correlation value near zero.\ he said he was using periodic function generation.