Discussion about the Korg PolySix synthesizer

While indeed the oscillator has a different design it should still be
possible to get the antilog amp calibrated better.

I actually think that the whole test mode isn't even needed: What we
actually need is the defined voltage coming from the DAC and then the
target voltage for a single note after the demultiplexer.
This seems to be the procedure for the Poly-61 (it uses unison mode so that
all voices have the correct voltage). This should nicely circumvent the
problem that there are two unused voices with the 8049C217.

The Trident measures the voltage for all 8 voices together in front of the
demultiplexer; hence it is necessary to press a single key eight times.

However I don't know if the antilog amp somehow has to account for
non-linearities in the oscillators.

I'll give this some more though later.


At 6:45 Uhr -0800 01.03.2014, <chipaudette@yahoo.com> wrote:
> The Mono/Poly uses a completely different VCO design.  The Mono/Poly has
> Volt/Octave VCOs instead of the Volt/Hz found in the Polysix.  So, the tuning
> issues are very different.
>
> As a result, I don't think that the Mono/Poly will be much help for
>insight on
> how to recover the tuning on a Polysix.