[sdiy] VCO reset time

[Tony Clark]

   Hi List,

   I guess if your VCO's don't double as LFO's, then you can get away 
with the triangle-core waveshaping techniques.  But I ran into problems 
with that as explained below.

   Before settling on a sawtooth core years ago, I had played around with 
triangle cores, but I found that I had a problem with the waveshaping 
aspect.  The tri-to-saw conversion is not good in that, in typical 
circuits, the wave is at double frequency to the triangle wave.  However, 
if you use a bit more circuitry you can achieve a corrected frequency 
sawtooth, but the waveform is glitchy and unsuitable for LFO applications.
   This just doesn't occur in saw-to-tri converter.  While there 
certainly is a glitch in the conversion, it is more pronounced at high 
frequencies and is undetectable at LFO ranges.
   Just my observation on the matter.

   Cheers,

   Tony

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