multiple-type Digisound VCDO thing?

[Steven Cook]

<previous posts deleted>

I like this idea! It strikes me that with 2 eproms, dacs, etc it would be
possible to crossfade between the outputs using a pair of vcas.

You could use a simple triangle/square type lfo, with the triangle wave
controlling the vcas (one would be fed from an inverted version of the
triangle wave) and the square wave selecting the wave addresses. (using the
rising edge of the square wave for one eprom, the falling edge for the
other.)

the idea would be that each eprom would switch to a different waveform at
the point where it's output was crossfaded down to zero volume, so the net
result would be a smooth continuously shifting waveshape a la
Wavestation/Microwave.

If a vclfo was used, the crossfade rate could be voltage controlled.

Of course, I'm probably forgetting something...