[A6] andromeda FM problem, do you have a solution?

[David Evans]

On Thu, Jun 20, 2002 at 04:48:25PM +0200, oliver hesch wrote:
> 
> i have noticed on my new andro, (manufactured september 2001, version 1.40.02)
> that as soon as i switch on FM, the voices stop being in tune and in rotate mode,
> each time you strike the same key, the sound will be very different 16 times (so for all of teh voices). if you continue you start hearing the same different 16 sounds. so each voice responds differently to FM. this happens even though the unit is perfectly in tune.

  This has come up briefly before.  IIRC, the VCAs that are responsible
for FM cannot be calibrated by the microprocessor.  If the FM amount is
at all high the VCAs' errors manifest themselves as differing FM indices
on each voice, leading to just what you describe.

-- 
David Evans          (NeXTMail/MIME OK)             dfevans at bbcr.uwaterloo.ca
PhD Student, Computer/Synth Junkie         http://bbcr.uwaterloo.ca/~dfevans/
University of Waterloo         "Default is the value selected by the composer
Ontario, Canada           overridden by your command." - Roland TR-707 Manual