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Discussion about the Korg PolySix synthesizer

Index last updated: 2026-04-28 23:40 UTC

Message

Re: [PolySix] my bad...

2015-12-18 by Bob Grieb

http://www.tauntek.com/PolySix.htm

Please check out this page on my site for what I am selling and for how much.  I do sort of vaguely remember a pause
in the arp when changing direction, but didn't try to find it or change it in the code.   At that time, I was trying to preserve the exact 
behavior of their code.   Could look at changing that, I guess.

   Bob


--------------------------------------------
On Fri, 12/18/15, James Matthew Smith jmsmatthewsmith@gmail.com [PolySix] <PolySix@yahoogroups.com> wrote:

 Subject: Re: [PolySix] my bad...
 To: PolySix@yahoogroups.com
 Date: Friday, December 18, 2015, 1:20 PM     
       
       Also, I should ask.. If you fully
 recreated the key assigner, how much do you sell them for?
 Chris here has just mentioned his! Thanks Chris!!! But Bob,
 I do wonder if since you're so familiar with the
 programming, you've noticed that there is a slight
 timing lag when the arp starts coming back down after going
 up. It was consistently annoying to me, but maybe it was
 just mine. And possibly one had to be doing pretty long and
 wide arp's to recreate the issue.. But it would reach
 the top and upon restarting itself to come back down there
 was like 30-50 msec delay before initial downward note
 started. It would miss the downbeat. And it was a repeat of
 the blast pitch so there'd always be a funny subtle
 stutter at the top. Have you ever had that? It seemed like a
 digital issue to me which is why I ask. Has anyone ever had
 this?
 On Dec 18, 2015 1:12 PM, jmsmatthewsmith@gmail.com
 wrote:
 Hmm. It was indeed on the west coast
 until about 2010. But the MIDI board it had was inserted in
 series, between the output multipin of keybed and original
 input multipin receptacle at that point into pcb. So nothing
 was actually removed. So maybe I have some names mixed up
 here. 
 
 
 On Dec 18, 2015 12:30
 PM, "Bob Grieb bobgrieb@yahoo.com
 [PolySix]" <PolySix@yahoogroups.com>
 wrote:
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
 
 
 
   
 
 
     
       
       
       I did sell a board, to Greg M.   Did your Poly Six
 vacation in CA?
 
 
 
 --------------------------------------------
 
 On Fri, 12/18/15, James Matthew Smith jmsmatthewsmith@gmail.com
 [PolySix] <PolySix@yahoogroups.com>
 wrote:
 
 
 
 Subject: Re: [PolySix] anyone have an IC6 (key assigner 8049
 217) left over from KIWI install?
 
  To: "PolySix@yahoogroups.com"
 <PolySix@yahoogroups.com>
 
  Date: Friday, December 18, 2015, 12:10 PM
 
 
 
 Well that's good news.
 
  Please pardon my ignorance of your device this is for,
 in
 
  fact I think my old polysix was midi modd'ed by you
 Bob
 
  so i should know this already (i'd bought it from
 
  someone who had it done by you).. But for what product
 of
 
  yours are you referring to? You have a replacement IC6 or
 a
 
  whole board? 
 
  On Fri, Dec 18, 2015 at
 
  12:04 PM, Bob Grieb bobgrieb@yahoo.com
 
  [PolySix] <PolySix@yahoogroups.com>
 
  wrote:
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
   
 
  
 
   
 
  
 
  
 
  
 
    
 
  
 
  
 
      
 
        
 
        
 
        You are incorrect in saying that noone has ever
 
  extracted the Poly Six key assigner code.
 
  
 
  As I mentioned in an earlier post, my PIC code is a
 direct
 
  port of that code.   I take the 8049 instruction 
 
  
 
  and map it to the equivalent PIC instruction.   I did
 have
 
  to add a little delay in a few places as the PIC is 
 
  
 
  much faster, but aside from that it's the same.   I
 also
 
  added MIDI note on and off, but that was a pretty 
 
  
 
  small change.
 
  
 
  
 
  
 
  Bob Grieb
 
  
 
  
 
  
 
  --------------------------------------------
 
  
 
  On Fri, 12/18/15, James Matthew Smith jmsmatthewsmith@gmail.com
 
  [PolySix] <PolySix@yahoogroups.com>
 
  wrote:
 
  
 
  
 
  
 
  Subject: Re: [PolySix] anyone have an IC6 (key assigner
 8049
 
  217) left over from KIWI install?
 
  
 
   To: "PolySix@yahoogroups.com"
 
  <PolySix@yahoogroups.com>
 
  
 
   Date: Friday, December 18, 2015, 11:59 AM
 
  
 
   
 
  
 
   
 
  
 
    
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
     
 
  
 
   
 
  
 
   
 
  
 
       
 
  
 
         
 
  
 
         
 
  
 
         Thanks Florian,I'm
 
  
 
   actually expecting the DIY arp to be a difficult
 
  situation
 
  
 
   but one worth pursuing, albeit with some patience and
 no
 
  
 
   guarantee it'll end up working.My setup
 
  has
 
  
 
   changed and i'm gearing up to abandon computers and
 
  midi
 
  
 
   altogether. To play the arp, i'll be wanting to
 create
 
  a
 
  
 
   miniature keyboard using dozens of small momentary
 
  buttons,
 
  
 
   and then (and i know this might be tough) have the
 output
 
  of
 
  
 
   the arp able to go to monosynth cv/gate. It would of
 
  course
 
  
 
   be nice to be able to have the output be switchable
 
  between
 
  
 
   V/oct and H/V, but V/oct would be preferred if only
 one.
 
  
 
   However is that's accomplished, external conversion
 
  
 
   would be possible at that point.
 
  
 
   When i used the arp on the polysix,
 
  
 
   i almost always just set the synth into "monosynth
 
  
 
   mode" which was just by using the chord function
 
  for
 
  
 
   just one note. Then it would only ever trigger the same
 
  
 
   voice over and over. So this would be the goal for the
 
  diy
 
  
 
   arp circuit, to create a purely trigger/cv/gate
 
  situation
 
  
 
   but only ever for one voice at output. I don't even
 
  have
 
  
 
   a poly synth anymore.
 
  
 
   And as for the tuubutec arp
 
  
 
   situation, and others, i'm pretty sure that the IC6
 
  
 
   program information has never been extracted by anyone.
 
  So
 
  
 
   all of the arps out there are approximations, probably
 
  
 
   including the korg plugin. They may be close, and
 
  probably
 
  
 
   all awesome in their own regards. And maybe i'm
 naive
 
  to
 
  
 
   think that the original is superior since i haven't
 
  
 
   actually used the Kiwi/Tubbu/etc versions and they
 
  
 
   definitely have wonderfully committed designers behind
 
  them.
 
  
 
   But it's worth trying to resurrect an original
 since
 
  
 
   i'm already in love with the darn thing. call me a
 
  
 
   romantic.
 
  
 
   
 
  
 
   
 
  
 
   On Fri, Dec 18, 2015 at
 
  
 
   11:30 AM, Florian Anwander fanwander@mnet-online.de
 
  
 
   [PolySix] <PolySix@yahoogroups.com>
 
  
 
   wrote:
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
    
 
  
 
   
 
  
 
    
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
     
 
  
 
   
 
  
 
   
 
  
 
       
 
  
 
         
 
  
 
         
 
  
 
         Hello J,
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   you are of course right about how wonderful the
 
  arpeggiator
 
  
 
   in the P6 
 
  
 
   
 
  
 
   is, but still there is the question: what
 soundgenerator
 
  do
 
  
 
   you want to 
 
  
 
   
 
  
 
   control with it? You have to rebuild the complete
 
  Voiceboard
 
  
 
   including 
 
  
 
   
 
  
 
   the VCOs!
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   The CPU and the D/A converter output a multiplexed
 
  
 
   "nearly V/Oct" 
 
  
 
   
 
  
 
   voltage without any trimming. If you control a normal
 
  
 
   CV-Synth with this 
 
  
 
   
 
  
 
   voltage, it will sound like "cats chant"
 
  (german
 
  
 
   saying). The trimming 
 
  
 
   
 
  
 
   happens within a common exponentiator for all voices
 and
 
  
 
   then is 
 
  
 
   
 
  
 
   demulitiplexed as six V/Hz voltages. The VCOs of the P6
 
  are
 
  
 
   V/Hz (this 
 
  
 
   
 
  
 
   is, why the P6 is that amazing stable in relative
 tune).
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   If you want the P6-Arpeggiator and want it to send
 
  
 
   MIDI-NOtes, then get 
 
  
 
   
 
  
 
   the tubbutec CPU for the P6 (https://tubbutec.de/modypoly/).
 
  
 
   You may use 
 
  
 
   
 
  
 
   it nearly standalone and it will send the Arpeggio via
 
  
 
   MIDI-Out and(!) 
 
  
 
   
 
  
 
   will read the notes from MIDI-In.
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   Florian
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   Am 18.12.2015 um 17:17 schrieb James Matthew Smith 
 
  
 
   
 
  
 
   jmsmatthewsmith@gmail.com
 
  
 
   [PolySix]:
 
  
 
   
 
  
 
   >
 
  
 
   
 
  
 
   > To be honest to you too, I personally find the
 
  polysix
 
  
 
   arpeggiator to 
 
  
 
   
 
  
 
   > be very unique in the way that it chooses notes
 
  when
 
  
 
   multiple ranges 
 
  
 
   
 
  
 
   > of octaves are held down.
 
  
 
   
 
  
 
   >
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
       
 
  
 
        
 
  
 
   
 
  
 
       
 
  
 
       
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
     
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
       
 
  
 
        
 
  
 
   
 
  
 
       
 
  
 
       
 
  
 
   
 
  
 
   
 
  
 
   
 
  
 
   #yiv4055182350 #yiv4055182350 --

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