The pitch track's "amplitude" is computed as the theoretical loudness of the track, which is computing by adding up the "loudnesses" of all the components, then converting back to dB. "Loudness" is incorrectly estimated as the fourth root of amplitude (should have been the fourth root of power, equal to the square root of amplitude, if one is to beloeve in "sones" as a psychoacoustically correct measure.
So the broghter the sound, the bigger the number (and the louder it should sound relative to its actual signal power). I haven't looked, but if you throw fiddle~ a sinusoid the two amplitude measures should be equal. By the way, I think sigmund~ works way better than fiddle~ on most classes of input signals :) Miller On Thu, Mar 10, 2011 at 06:52:54PM +0100, Matteo Sisti Sette wrote: > Hi, > > What's the scale of the "amplitude" value that comes packed together > with each individual pitch? (i.e., the second value of the output of > the third outlet in the help patch)? > > If you open the help patch as is and don't touch anything, the > example signal (phasor) is being detected ah having an "overall" > amplitude of about 90 dB, while the unpacked amplitude of the (only) > individual pitch is about 116. How should I interpret this? > > thanks > m. > > _______________________________________________ > Pd-list@iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list _______________________________________________ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
