[sdiy] J-wire keyboards.

[harrybissell at wowway.com]

we should say check the archives but here's the short and skinny...

A top octave synth uses a single high frequency oscillator (typically in the
MHz range) and digital dividers to generate all 12 notes of the equally
tempered scale to arbitrary precision (higher frequencies and larger divisors
get you closer).

Many string synths used this technology. It was an early way to get full
polyphony from a synth. It was also used in many organs.

The trouble is that all the notes are phase locked ... the beating will never
vary. Most people don't like the sound.  Add a lot of Chorus and it could be OK.

MAybe use a (gasp) BBD ???

H^) harry




On Fri, 15 Aug 2008 15:57:13 +0100, cheater cheater wrote
> David....
> what the hell is a top-octave synth?
> 
> On Fri, Aug 15, 2008 at 3:02 PM, David Moylan <dave at westphila.net> wrote:
> > Mainly adding a cv out to some top-octave synths.
> >
> > cheater cheater wrote:
> >>
> >> Out of curiosity, what are these features, David?
> >>
> >> On Thu, Aug 14, 2008 at 5:41 PM, David Moylan <dave at westphila.net> wrote:
> >>>
> >>> Has anyone ever seen the typical Pratt/Reed J-wire keyboards with more
> >>> that
> >>> 2 busses?  Seems like I could add some nice features to some of my older
> >>> synths if I had an extra buss but I've never seen one.
> >>>
> >>> Thanks.
> >>>
> >>> Dave
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Harry Bissell & Nora Abdullah 4eva