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Re: Help: Apple II Sound Trick



Supertimer wrote:
> 
> I think this was how certain Apple II sound programs can pull up to
> 3 voices out of the internal speaker (remember, this was before
> the Apple IIGS and the Ensoniq and 32 channel sound).  One of
> these was the Music Construction Set.

Well, actually there's another trick for that, but the trick I'm looking
for was much more elementary. A friend said the same thing is used for
DTMF - Dual Tone Multi-Frequency. You generate two tones that you
rapidly alternate between to generate a harmonic note.

My quest for this article continues...
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