Lin detune,MS20 Core,Polysix/Trident

[Haible Juergen]

	>So this effect can be done with a common expo generator with a
voltage
	>output driving the linear modulation inputs of normal VCOs?

Exactly.
Keep in mind that the offset voltage of "vintage workhorse" opamps like
LM1458, TL072 or LF353 is too hight to use them untrimmed (too much
"lin detune" so to speak) - which I suppose is why most manufacturers
turned to current output expo converters driving the CCO core directly.
Korg used cheap opamps and trimmed them, I suggest using (nowadays
cheap also) precision opamps like the OP-07.

JH.