simple way to add harmonics to a fundamental signal

[Andrew Schrock]

You could just make a VCO with several sub-octave dividers for pulse
output, then run waveshapers on the whole lot. Of course you'd need
several waveshaping sections. Not too painful really.. just repetition of
the same circuit over and over. There are lotsa waveshapers on the net..
tomg uses a basic pulse->saw->tri->sine on some of his VCOs. (I think) If
you're really anal the symmetry isn't perfect.. nothing you can hear tho.. 
(or maybe I'm wrong, I haven't put my VCO-4's together yet ;) 

Andrew

-| Andrew Schrock | aschrock at cs.brandeis.edu |-

On Mon, 24 May 1999, Thomas Robert de Massy wrote:
>    I'm currently designing a VCO, and I want to add 3 or 4 harmonics to the fundamental signal. Right now the only way that I've found is to add one oscillator for
> every harmonics, but since my oscillator will be complex (square,triangle,sin,saw,etc)
> the circuit will be very complex and painful to make (it will be a 8 notes polyphonic synth). I thought that there may be a simple way to do this, for example sending the fundamental signal to a part of the circuit that would add the harmonics. Anyway I have no clue of what I should look for. Anyone have some suggestions or schematics ?