On Wed, 2005-06-29 at 00:47 +0200, Jens M Andreasen wrote: > On Tue, 2005-06-28 at 21:13 +0100, Simon Jenkins wrote:
> > It seems the difference is that PD works on individual cycles of the > > modulated waveform. The wiki author guesses that there may be an extra > > synching oscillator but in fact... > This thread is about correcting some of the wrongs in the Wiki! (you > damned dummy!) erm... er... huh??? Thats what I was doing, wasn't it? Oh, hang on... I'd clicked the link, so my comments actually apply to this page: http://en.wikipedia.org/wiki/Phase_distortion_synthesis > > > > "The scanning interval speeds up from 0 to [pi] and then slows down from > > [pi] to 2 [pi]. The overall frequency is constant, according to the > > pitch of the note, but the output waveform is no longer a sine". > > > > ...somebody just did the math(s). > > > Did not! Did perhaps? Did :) > > Where is this from? Its from this book: http://mitpress.mit.edu/catalog/item/default.asp?ttype=2&tid=8218 The information can be second-sourced from this Sound-on-Sound tutorial: http://www.soundonsound.com/sos/1997_articles/sep97/synthschool3.html which was written by the co-author of The Casio CZ Book. There's a bit more detail here too but unfortunately the diagrams are not online, only the text is. Simon