Fast VCOs/V--F converters

[Paul Maddox]

Douglas,

>
>I think you can see why DCOs became the norm!
>

yep, makes life a touch easier... and why many keyboards today, DON't 
have glide/portamento, funny eh?

>Since I bopped into this thread a bit late I'd like to ask a question 
about
>the end goal here for the waveform table lookup VCO.  What is the
>expectation that this design will produce in the way of sonic 
diversity?
>The practical answer may be startling!  How many table locations are 
being
>considered?  Will waveform sequencing be possible?  Are we trying to
>reinvent the PPG?
>

I'm trying to reinvent a modular version of the PPG, take a look at my 
web page (below).

I have a module which has 127 waves from the PPG 2.2 and this need to be 
driven by a high frequency VCO (128* or 64*) , it has sync in and ALSO 
has CV selection of the wave, so if you have an analog sequencer, bingo, 
wave sequencing.. I am now developing a module to "morph" from one wave 
to another, so if you took, TWO of my wavetable modules, sync'd them and 
ran them from the same clock, fed the outputs into this you could take a 
complex wave (say bell type sound) to a sine wave or to a square or 
whatever. That said, you'll notice its a seperate module, so in theory 
(dont know what it'd sound like) you could morph from sine wave to say 
an audio input like a voice.. again the amount of morph is under CV 
control. If you want I'll send you a .jpg of what the output looks like 
when I calculated it in excel.

>Douglas Kraul

Paul Maddox



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