[sdiy] Quantizer selectability?

[Metrophage]

I know of quantizers which are preset with pots. I know of simple
digital quantizers which use an EPROM and DAC. It would not be too hard
for me to make a paint-by-numbers quantizer based on a previous
schematic and ROM data. 

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?

Just wondering if this is conceptually on the mark, or if I am missing
something which would be obvious to someone more knowledgable. I have
very little experience with making digital circuits as of yet! This
sounds sort of simple to me, but I have heard of no such project.
Either not many are interested in this, or it doesn't work this way!

CJ


		
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