On Tue, 2010-08-17 at 13:52 +0200, Pierre Massat wrote: > I don't understand this cycle and zero-crossing thing...
Sorry, this was targeted to the question about how to extract exactly one single cycle of a recording of a periodic waveform. I don't know how this could help in building an autotune-like patch. It might help to build a pitch-shifter, but I rather would go for the pase-vocoder way since I would expect much better results from it. Roman > 2010/8/17 Roman Haefeli <reduz...@gmail.com> > On Tue, 2010-08-17 at 12:59 +0200, martin brinkmann wrote: > > > i will try this when i have found a way to extract > > single-cycle waves from audio input in pd... > > > Not yet tried it myself, but what about writing live input to > a table > (for instance with [tabwrite~]) in order to have access to the > audio > data with message based objects? With those it should be > fairly easy to > the detect the exact position of a zero crossing. For finding > a single > cycle, it would be sufficient to find a positive crossing - > for > instance- and from there find the next one, so you have the > exact end > points of one single cycle. > > Of course, there might be waveforms which have several zero > crossings > per cycle, but the above approach might be a start. > > Roman > > > > > > _______________________________________________ > 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
