[sdiy] Generating acyclic waveforms?

[Dave Manley]

Simon Brouwer wrote:
> I see two other ways:
> - using wavetables (very long ones)
I'd discounted wavetables just because they would have to be very long, 
but memory is cheap, so why not.

What about Wave Terrain synthesis?  Is there an sdiy implementation 
anywhere?  Load up a 2-d matrix with a surface of choice and then read 
linear subsections. Altering the start and end coordinates over time to 
vary the output waveform.

-Dave