Hello,
I was interested in a reference, possibly a scientific paper about the principle of operation for [sigmund~]. Does anyone have suggestions?
Thanks

Miller Puckette's site (http://msp.ucsd.edu/) has references to his publications, one of them is about [fiddle~] and [bonk~]:

http://msp.ucsd.edu/Publications/icmc98.ps

Since [fiddle~] is also a frequency domain pitch detector it may use a method similar to [sigmund~], but I'm not sure about that (why would there be two freq. domain pitch detectors I wonder).

Katja

Thanks Katja.
The sigmund sources are also compilable for Max, maybe they're older than fiddle and bonk.
I'd like to hear from Miller where did this pitch tracker takes pace...