AW: Serge Waveshaper was Re: Harmonics question

[Haible Juergen]

	>This sounds exactly to what you can do with the Formant Waveform
	>Processor (described in the second Formant book, check Anders
	>Sponton's nice site).
	>The Formant version will only fold over on one side, but it is
simple
	>to do for both sides. The schematics consist of 3 op-amps where one
is
	>just a standard summing amp of two input amps. One is the input
buffer
	>for the modulation CV/Clipping Niveau. The output of the modulation
	>opamp hit a standard diod in reverse operation. The other end of
the
	>diod is connected to a resistor from the signal input buffer. The
	>diod/resistor point signal is then feeded to the negative input of
a
	>summing amp. The positive input of the same summing amp is being
	>feeded with a pot-dampend version of the output of the signal
summing
	>amp. The output of the last summing amp is the actual output.

Hey, if this is the circuit I think it is, it may be one of the very first
synth
module schematics I ever saw in my live. It was originally published
in the "Elektor Halbleiterschaltungsheft", a summer double issue that
used to contain few text articles, but approx. 100 rough DIY circuits.

Not that I would have understood much about this circuit back then
(or about synths in general), and I haven't looked at it ever since, but
mentioning it now, it evokes certain memories. I couldn't afford a year's
Elektor subscription, but I bought the "Halbleiterschaltungsheft" every
year. And then sucking every word out of it (;->)

JH.