[sdiy] poly?

[Robert Holmström]

If you don't want to program the poly controller yourself you can always 
wait for the polyDAC:
http://www.oakleysound.co.uk/polydac.htm
and just do the analogue bit yourself.

Robert

>
>Actually it is not all that hard, but it is involved.
>
>Number one requirement:The use of a microprocessor for allocating notes to 
>hardware.
>
>Back in 1978 I built a poly (four voice).  You need, of course, a number of 
>identical synth channels, and an interface between your keyboard and the 
>synth hardware, which consists of the micro controller.  John Simonton 
>(Paia), I would say, pioneered the DIY poly with the 8700 keyboard.
>
>The software for doing the control is not complicated.  On a 6502 that I 
>used, the firmware used up a whopping 256 bytes or so of code space, and 
>used about 64 bytes or ram.  Although, I originally used a Polymorphic 8813 
>(S100 based) computer to do the job originally.
>
>Old issues of Polyphony, from the 1975-76 era should have a lot of articles 
>on the subject.
>
>At 05:11 AM 2/17/2004 -0800, Andalong Dudigual wrote:
>>hello everyone, I feel a little dumb asking this, but
>>I never really understood how to make a synth
>>polyphonic. what are some different methods?
>>
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>
>         -Jim
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>
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