[sdiy] Polyphonic issue revisited.

[Scott Gravenhorst]

For the life of me, I cannot remember who it is, but someone on this list has
developed a TOG replacement using a PIC or AVR or something.  I believe it
turned out to be a 2 chip set.  But that's gotta be better than nothing or
trying to do it with a boatload of CMOS 4xxx.  

C'mon, whoever you are, own up!

And dang, I still have an MKS50240 that still contains it's magical spirit. 
Any of you Genie liberators want to tell us what you did that I should NEVER do?

harrybissell <harrybissell at prodigy.net> wrote:
>HAH HAH ha....
>
>I let the Genie out earlier this year... after saving that chip for nearly 20
>years. I wanted to
>make a precision calibrator for a pitch to voltage converter...  now toast
>
>H^) harry
>
>Tim Johnson wrote:
>
>> ... I let the genie out of the last TOG I had in an attempt to master
>> DIY-SYNTH building years ago.
>> I loved that chip. 8¡Ö-(
>>
>> (...spares anyone?)
>>
>> ==>:-/
>>
>> >From: "Roman" <modular at go2.pl>
>> >To: "Tim Johnson" <ifixaudio at hotmail.com>
>> >CC: <synth-diy at dropmix.xs4all.nl>
>> >Subject: Odp: [sdiy] Polyphonic issue revisited.
>> >Date: Sat, 13 Dec 2003 20:25:46 +0100
>> >
>> >Just a word of warning, from someone who spent 5 years making
>> >a polysynth. Well, it took me 5 years to build the damn thing!
>> >And if it's not enpugh to scare you off, after I finished it, I never
>> >wanted to go back to analog synth building and I hated it for
>> >weak sound that didn't satisfy me enough.
>> >But then something happened, I found this lis and I'm stuck
>> >again in this analog goo. ;)
>> >Anyway, I used TOG, so I got rid of tuning problems. Filters
>> >and envelopes are analog, lots of digital circuitry, and Z80
>> >controlling all that.
>> >If you can get hold of that P6 voicing board, go ahead. It will
>> >be much simpler and cheaper.
>> >I know someone on this list has redesigned the P6 voicing
>> >board and is offering PCBs for sale, but can't remember who that was.
>> >Archives search might help?
>> >
>> >Roman
>> >
>> >----- Original Message -----
>> >From: Tim Johnson <ifixaudio at hotmail.com>
>> >To: <synth-diy at dropmix.xs4all.nl>
>> >Sent: Friday, December 12, 2003 2:12 PM
>> >Subject: [sdiy] Polyphonic issue revisited.
>> >
>> >
>> > > Hi hate to bring this issue up again but I have been wondering about the
>> > > possibility of building a poly synth. Just a couple of notes 8 or 10
>> >you
>> > > know. (Just kidding ==8-O).
>> > > Are any gurus familiar with the Korg Poly6? (I loved that board.) I
>> >worked
>> > > on one a while back (I have a schematic for interested parties to
>> >peruse)
>> > > and noticed that every time a key is played the led on the circuit board
>> > > jumped from one of the 6 oscillators to the next.
>> > > ... relatively feasable for a DIY or should I just buy one? Heaven
>> >forbid.
>> > >
>> > > (Donning rain gear for the tomatoes.)
>> > >
>> > > Jim
>> > >
>> > > _________________________________________________________________
>> > > Take advantage of our best MSN Dial-up offer of the year ¡ª six months
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>> >
>>
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-- Scott Gravenhorst | LegoManiac / Lego Trains / RIS 1.5
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