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

[Gordonjcp]

On Sun, Nov 27, 2022 at 04:02:45PM -0500, Matthew Skala via Synth-diy wrote:
> 
> 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.

Well if you apply vibrato to a musical note generated by an FM synth, then over the period of a few cycles of the FM waveform the vibrato input will be near as dammit DC.

Kind of like how all this longwave 430MHz stuff seems a lot like DC when you work up around 60GHz and tune your aerial with jeweller's rouge...

-- 
Gordonjcp