[sdiy] Quantizer selectability?

[john mahoney]

Have you seen the Blacet Mini Wave and Matthew Davidson's quantizing
ROMs?

Mini Wave:
http://www.blacet.com/MW.html

ROMs:
http://stretta.com/~matthew/resources/waveproms/index.html (Scale
Quantizer is down the page)

--
john


----- Original Message ----- 
From: "Metrophage" <c0r3dump23 at yahoo.com>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Monday, November 08, 2004 9:53 AM
Subject: [sdiy] Quantizer selectability?


> 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
>