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From: smithj@hpsad.HP.COM (Jim Smith)
Newsgroups: comp.music
Subject: Re: Phase "distortion" synthesis
Message-ID: <2650003@hpsad.HP.COM>
Date: 6 Sep 90 19:03:05 GMT
References: <2010@aber-cs.UUCP>
Organization: HP Signal Analysis Division - Rohnert Park, CA
Lines: 20

Scott Amspoker scott@bbxsda.UUCP mentions that he believes that phase
distortion synthesis is the same as FM.  It isn't, because the phase is 
distorted synchronously with the carrier.  In other words, in FM, the
frequency ratio can be anything including non-integer ratios, but in phase
distortion, the ratio is always 1:1.  
Also, the modulator is not necessarily a sine wave.
Phase distortion synthesis is more akin to running the phase increment of
a digital oscillator through a lookup table prior to running it through the 
sine wave lookup.

I'm not sure this clears up anything, but what the hell...

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| Jim Smith                         | e-mail: smithj@hpsad.HP.COM             |
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