[chuck-users] fm?
Ge Wang
gewang at CS.Princeton.EDU
Wed Mar 8 19:52:29 EST 2006
Hi!
Graham is right. FM is an abstract base class for all the STK's
FM-based instruments. We will fix it to gracefully report error
without crashing in the upcoming release.
There are several ways to do FM synthesis in ChucK. A straightforward
approach is to move along in time, possibly every samp, and modulate the
carrier in any way you like:
// carrier
sinosc c => dac;
// modulator
sinosc m => blackhole;
// carrier frequency
220 => float cf;
// modulator frequency
550 => float mf => m.freq;
// index of modulation
.5 => float index;
// time-loop
while( true )
{
// modulate
cf + (index * mf * m.last()) => c.freq;
// advance time by 1 samp
1::samp => now;
}
Hope this helps!
Best,
Ge!
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