[sdiy] VC Glide

[jhaible at t-online.de]

> so that the transients while playing do not count.
> Offset will vary with tenperature and aging, e.i. very 
> slow, 
> at least we can design temerature changes to be slow. 
> This 
> should all be in the order of minutes. 

The problem with cheap OTAs (still puzzled about Jim's
phenomenal 3280 ...) ist that Vos varies with Iabc.
And dIabc/dt is fast in typical synth circuits. 

JH.