behavior when CV out of range
jhaible
jhaible at debitel.net
Fri Oct 22 22:15:41 CEST 1999
>Another thing is the PWM input which could cut of the output when
>"overdriven". Even that can be a nice feature. One can use an
>envelope to delay the onset of the sound.
Good point.
It was only recently that I discovered that bot limiting or not limiting
can make sense for PWM. Most synths don't limit, and that's nice
for fading in a second VCO with some delay, by using an ENV
to "over modulate" the PW. Especially nice on the Prophet 5.
If you don't want this effect, i.e. if you want the VCO always being
active but still getting the full PWM spectrum, limiting to 1% and
99% makes sense.
The CS-50, however, (and I guess other CS synths, too), has a limit
of approx. 10% and 90% (with 50% to 90% on the Manual knob).
Setting the Manual PW to an asymmetric value like 70%, and
overmodulatig with the LFO (sine wave) will result in an ussymmetrically
clipped sine wave. This can give a very "full" sounding modulation
especially for low PWM rates. Why ? Rather fast transistions even
for low LFO rates -> strong FM , but intermittent, only in times when
LFO is not clipped.
JH.
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