Airhorns. -Chuckk
On 3/28/07, Charles Henry <[EMAIL PROTECTED]> wrote: > filtering in general may not be the best approach because some of your > partials from one xylophone note will overlap with other note's > partials. They are inharmonic complex tones, which are not so easy to > predict.... you'll probably have to measure the frequencies of each > note of your xylophone to know exactly what the spectrum is like. > > In terms of averaging like Jamie suggested... suppose you want to > compute the expectation of the power spectral density. You would take > the fft of the auto-covariance of your recieved signal, divided by the > number of blocks in your time frame. (dividing by a number of blocks > will not in general be necessary, when all you need to do is find a > peak, with pique~ as before) > This will give you a very clear/accurate peak, without much > jitter/noise to clean up. > > Chuck > > _______________________________________________ > [email protected] mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > -- http://www.badmuthahubbard.com _______________________________________________ [email protected] mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
