[A6] fm instability

[David Evans]

On Tue, Nov 26, 2002 at 03:13:19PM -0500, charles graef wrote:
> Fair enough.  This sounded like an application where accurate tracking
> was paramount, which most people's analog equipment isn't really
> designed to deliver.
 
  I don't think that the issue is tracking but rather lack of precise control
over FM index, caused by the inability to calibrate the relevant VCA.  In a
way this may be a harder problem to solve than tracking, since it's pretty
easy to adjust VCO frequency offsets under CPU control.  My guess is that the
ASIC designers just ran out of space and had to stop somewhere.

-- 
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