Pulse Width Multipliers

[Tomy Hudson]

Has anyone ever built or seen a circuit similar to the "Pulse Width 
Multiplier" article by Craig Anderton in Polyphony Jan/Feb '81?

For those not familiar, I quote from the article:

"The PW Multiplier uses four comparators, three of which have voltage
controllable thresholds, to turn a triangle wave into a number of
pulse waves with varying duty cycles. These pulse waves are then
mixed together digitally via EX-OR gates, resulting in a very complex
composite waveform."

I find it interesting because the typical timber modulator has only
one dimension of control. 


Tomy