[sdiy] Additive VCO

[Scott Gravenhorst]

Just a side comment, I don't know what experience you have with modular
synthesis, but static waveforms are not sonically interesting.  There are
many ways to make dynamic ones through waveshaping and filtering.  While
additive synthesis can have merit, I don't think it's the end-all be-all. 
Waveshaping is a great way to add harmonic content and most waveshapers I've
seen are easily voltage controlled.  Many members here have waveshaper
designs posted on the web.  And many waveshaper circuits are incredibly
simple.  The effort you would put into building 16 VCOs might actually give
you more of a return building say 2 or 3 VCOs and some waveshaping circuits.
 Add to that some modulation circuits, and you can have some nice sounds that
change over time.  In a world of tonal music, IMHO, *that* is what sounds
interesting.

"M.A. Koot" <makoot at gmx.net> wrote:
>Well the initial idea was to just have the amplitudes controllable by hand
>(using the mixer-pots). But automated control would be a lot nicer I think..
>
>cheers,
>Michiel
>
>> > Another feature I might like to add is single VCA's for every hamonic.
>> > That'd be a lot of work, but it would be very nice I think if you would
>> be
>> able to
>> > change every single harmonic amplitude over time using envelopes etc...
>> 
>> You absolutely *need* such a feature in order to do true additive
>> synthesis.
>> You must be able to control the amplitude of each partial.
>> 
>> I wanted to mess with additive, too, so I just bought a Kawai K5000S --
>> too
>> bad that UPS shattered part of it, but it was still a decent price.
>> (Anybody
>> know where to get Kawai parts? I have yet to look...)
>> --
>> john
>> 
>
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