On Sat, 9 Jan 2021 10:05:11 +0000, Folderol 
declaimed the following:

>Thanks for all this further information.
>It is indeed a software synthesiser, but a very unusual one. Whereas most of
>these either work on sound samples, or previously generated wavetables,
Yoshimi
>creates everything on-the-fly from mathematical formulae. These can make
>dynamic changes within individual cycles, resulting in incredibly rich sounds.
>
 Sounds like something inspired by Casio Phase-Distortion (CZ series in
the 80s). While there /was/ a cosine table stored in memory, the system
adjusted the "phase" during readout (essentially reading part of the table
faster than other parts while keeping the same total cycle time) to change
the wave shape of the DCO (a square wave effectively was read the rising
part of the curve so fast is looked vertical, then the top so slow it
looked flat, fast drop, slow bottom...).

https://en.wikipedia.org/wiki/Phase_distortion_synthesis


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 Wulfraed                 Dennis Lee Bieber         AF6VN
 wlfraed@ix.netcom.com    http://wlfraed.microdiversity.freeddns.org/

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