Serge Waveshaper was Re: Harmonics question

[JWBarlow]

In a message dated 5/19/98 3:52:56 PM, magnus at analogue.org wrote:

>I recall seeing diagrams of such unlinear waveshapers. I even think
>that we have discussed this several times. For instance do I recall
>that the Serge waveshapers would do odd and even harmonics and that
>the schematic is very simple indeed.


Hi Magnus

I wonder if you're confusing the Serge Triple Waveshaper with the Wave
Multiplier module. One waveshaper is a very simple circuit based around one
quarter of an LM 3900 and does non-linear "Harmonic Reduction" (unlike
anything done in music theory). It is similar to a CA 3080 tri-to-sine
converter I believe.

The Wave Multipliers do some nutty half and full wave rectification (I
believe) and have a whole lot of chips. The sound to me is very much what I
would expect from the timbre modulator circuits in the oft mentioned
Electronotes and in Barry Klein's book. I would never attempt to build one,
too complicated for a timid sole such as me. Now if some one offered some kits
of these circuits...

John B