[sdiy] harmonic generator

[mark verbos]

That is exactly what the electronotes timbre modulator does. Takes a 
sine input and full wave rectifies it. Squares it and then rossfades 
from the sine to a manual mix of these two. I have a board built of it, 
but never tested. I imagine it is a lot like a Buchla oscillator. 
Exactly like the extinct Wiard tone source.

mark

John L Marshall wrote:

>----- Original Message -----
>From: <media.nai at rcn.com>
>To: <synth-diy at dropmix.xs4all.nl>
>Sent: Sunday, February 24, 2002 3:17 PM
>Subject: Re: [sdiy] harmonic generator
><snip>
>
>>>>Wouldn't full wave rectification simply result in octaves??
>>>>
>>>Yes, but you fail to get other overtones than 2, 4, 8 and 16
>>>
>
></snip>
>
>My understanding is that a full-wave rectified (absolute value) sine wave
>contains an infinite even harmonic series. A square wave contains an
>infinite odd harmonic series.
>
>I think that it would be interesting to modulate between full-wave rectified
>sine and a square wave.
>
>Take care,
>John
>
>