[sdiy] Frequency modulation vs Phase mod, was: Buchla 295 10-band comb filter topology

[Tom Wiltshire]

> On 28 Nov 2022, at 17:51, Ian Fritz via Synth-diy <synth-diy at synth-diy.org> wrote:
> 
> If the signal were PM, the modulation amount would change by a factor of two for every octave. This would be quite obvious, I think.


Unless they compensated for that, as suggested earlier. Which we don't know, so the result doesn't tell us much beyond the obvious - the waveforms don't change across the keyboard on the DX7.

Tom