[sdiy] Quantizer selectability?

[John Speth]

The Doepfer A156 quantizer is a good example of what
you're after.  I don't know how it's implemented but
I'll bet it's not high tech.

Unless the goal is to make wierd tunings, it would
seem to me that algorithmic manipulation of the
digitized CV stream is the simplest way to go.  That
would suggest using a microcontroller and hence the
effort would be in software.

JJS


> What interests me though is making an EPROM / DAC
> quantizer with
> pushbutton selectable tunings. It appears to me that
> such quantizers
> are similar to the VCDOs I have seen. Would I be
> accurate in my guess
> that as one can make tables of various waves to step
> through in a VCDO,
> that one can just as simply fill a 2764 or 27128
> with tables which
> represent a selection of musical scales, and step
> through them? I
> suppose there would need to be a comparator to
> determine which value of
> a scale is most accurate, in relation to its input
> at the time. What
> sort of format would the ROM data be in -
> frequencies in hex or binary?


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