[sdiy] PM vs FM was: Re: Buchla 295 10-band comb filter topology

[mskala at northcoastsynthesis.com]

On Sun, 27 Nov 2022, René Schmitz wrote:

> In a nutshell the difference between PM and FM is what happens when the
> modulating operator has a DC offset.
>
> With plain FM you get a net de-tuning (and your note is off), with PM you only
> get an inaudible phase difference.
>
> This is what makes PM the mode that is musically more useful.

Ah, I see this after writing my response to David's message.  You're
talking about the digital realm, which is a little different from analog;
there's not going to be a DC offset through a coupling capacitor, of
course, but it's at least conceivable an offset could exist in a digital
signal.  I'm still skeptical of it coming up *frequently* and making a
*categorical* difference.

-- 
Matthew Skala
North Coast Synthesis Ltd.