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Subject: Re: [motm] Additive Synth Tools

From: "Paul Schreiber" <synth1@...>
Date: 2003-05-06

>
> Well, I was going to ask about just this such use for the Cloud Generator,
> but was waiting until you released a little more details on the beast.
>
> However, you've now opened that door yourself!


The basic design is called a "phase accumulator". It's used in the DX-7 and in the Synergy. A
modified version of it is also used in the Eventide Harmonizers to do the pitch shifting.
Basically, the hardware is an adder and a register. The waveform is in an EPROM. You index
through the EPROM by 'skipping' samples at a ∗constant rate∗. This is different from a MiniWave,
where you are indexing sequentially through the wavetable at a ∗variable rate∗.

Paul S.