[sdiy] Polyphonic issue revisited.

[MAKoot MAKoot]

And how about the AMS-1 Oscillators? Are they stable enough to handle such a
job? Because I actually also inteded to make my synth 4Voices-polyphonic.

cheers,
Michiel

> Building a polyphonic DIY synth is a big job....but not imposible.  I
> built 
> a 4 voice one some 25 years ago...I used a Polymorphic 88 computer the 
> keyboard controller...but, that is another story....
> 
> Your biggest engineering challenge is going to be the hardware.  20 years 
> ago, Curtis Electro Music and Solid State Music had chip sets to build 
> synthesizers...these greatly reduced the parts counts when building a 
> poly.  Those don't, for practical purposes, exist any longer, you we are 
> stuck with building our synths out of discrete components, so to speak.
> 
> Another problem that you will have to solve is temperature stability of
> the 
> oscillators. Not exactly an easy job.  But it may force you to make a hard
> 
> choice between linear and exponential oscillators...(linear  and expo 
> oscillators both have their own unique problems to solve).
> 
> It is a big job....one that so far, I have not had the guts to re-tackle 
> again...although, I am getting close... :-)
> 
> At 08:12 AM 12/12/2003 -0500, Tim Johnson wrote:
> >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
> >
> >_________________________________________________________________
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> 
>          -Jim
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> 
> 

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