Wavefolders, Shapers, and Clippers


“Bias,” “Symmetry,” and “Offset” is just a second signal being sent into the wavefolder.

Here is how I would set it up in your patch.

my-weird-wavefolder-with-bias.audulus (12.2 KB)


Bastl reminds us that you can run modulation through wave folders for interesting effects as well.


FWIW, Todd Barton says that on the Buchla 261e, symmetry morphs a sine to a square wave and high order morphs sine to “spike wave”.


Just happened an interesting article about the wavefolding in the Music Easel.

See the interesting comment by Verbos in the page comments about the 148 version of the oscillator:

mark verbos

The 148 makes the odd harmonics using a circuit that folds a triangle wave much like the circuit in the 259 or 208. It’s not a circuit that you just send in a sine wave and get out all the harmonics though. It doubles the triangles using a full wave rectifier and multiplies by 3, 5 , 7 and 9 using wave folders. Then converts all of those to sines individually.

October 24, 2008 at 6:17 PM

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Given the interesting way that the Buchla 261e’s wavefolding kind of sweeps up as harmonics are added rather than just piling on more harmonics – I am thinking it would be interesting to put together a wavefolder that as you turn it up change changes the frequency of the function that is doing the folding. So that there are three or four way points that results in a sort of harmonic sweep that results in high order harmonics without becoming as “dense” as typical wavefolders.

Not quite sure how to do that efficiently. Food for thought.