Thanks joel, it's starting to make sense to me now.
I'd suggest more examples in the documentation explaining what this sync
parameter is and works so it's clearer
cheers
2017-06-04 0:53 GMT-03:00 Joel Matthys
there may be a default parameter, right? And that seems to be 0. If I have sync at "0", I hear no sound.
I think "sync" is a poor keyword for this method. It has nothing to do with hard sync. Instead, it determines what to do with a UGen connected to its input.
This: SinOsc a => SinOsc b => dac; 0 => b.sync; // the default
results in no audio because ChucK is attempting to use the output of SinOsc a (which is of course a stream between -1 and 1) and using those values as the frequency parameter for SinOsc b. In other words, SinOsc b is playing at a frequency between -1 and 1.
Here's a demonstration of how sync 0 can work:
Phasor p => SinOsc b => dac; 1 => p.freq; 1000 => p.gain; 0.25 => b.gain; 4::second => now;
Anyway, it doesn't seem like the sync parameter is able to do hard sync. It seemed that the "0" value would do that, but, as I said, I hear nothing.
I think you're right; to do hard sync you have to manually check the Phasor and reset the oscillator phase. BTW, according to the source code, the .phase method ranges from [0-1).
Phasor p => blackhole; SinOsc s => dac; 0.2 => s.gain; 440 => s.freq; 1 => p.freq;
spork~ hardsync();
while (true) { second => now; p.freq() + 1 => p.freq; }
fun void hardsync() { float prev; while (true) { p.last() => float last; if (last < prev) 0 => s.phase; last => prev; samp => now; } }
If phase input is linear in chuck, then the code from SuperCollider would be equivalent, but it is not. And even if it wasn't linear, I tried it with radian values and did not get the same results.
I suspect it is not really doing phase modulation because it doesn't matter if I change the carrier frequency, and that is weird.
well, I guess I'm repeating myself, sorry, just anxious in the hope of clarification.
thanks
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