11 Oct
2002
11 Oct
'02
8:36 a.m.
--- Dave Griffiths <dave(a)pawfal.org> wrote: > > >
FWIW: In SSM the whole frequency range maps from
-1 to 1 - so an un amplified
My BLOP plugins include a frequency modulator/shifter
that takes a frequency value and a modulating signal,
outputting the frequency modulated by +/- 1 octave per
+/- "voltage" in the signal:
output = freq * powf(2.0f, signal);
Works fine for LFO type things, as well as making
direct control of stuff like cutoff sound more
natural.
There's also simple add and product plugins for more
basic stuff.
-
Myk
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> oscillator modulating another oscillator
sweeps
the entire range.
Yes, this is the problem, the CV value is linear
with frequency, not
pitch (octaves). You define 0.0 to be a
particular
low frequency (say A0)
and then every +1.0 over that doubles the
freqency, 1.0=A1, 2.0=A2 etc.
I guess a couple of plugins to convert between
linear and exponential would do the trick?
I'd like to get a load of simple arithmetic plugins
done actually so we could do more mathsy stuff like
that. Combined with sub-patches it would be quite
powerful (in a PD kind of way).