[sdiy] Glide question
David G. Dixon
dixon at interchange.ubc.ca
Sat Sep 4 23:04:48 CEST 2010
> There's an example of a voltage-controlled glide in the Pro-One
> schematics. Unfortunately it uses the hard-to-find CA3280, but you could
> use a LM13700 like David suggested. Or even a CA3080 - saves wasting half
> a chip.
>
> Olivier mentioned 'constant rate' and 'constant time' glide, and that an
> RC filter (VC or not) gives you constant time. An integrator (again, VC or
> not) would give you constant rate. There is one other difference between
> them - one is a cap charging curve, and therefore the glide slows down as
> it approaches the target note, whereas the other is linear wrt to pitch
> and glides at the same rate all the way to the target.
Sorry, Tom. I responded before I read your response. GMTA!
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