[sc-users] Synth Definition Argument Control

[Esben Stien <b0ef@xxxxxxxxxxxxxxxx>]

I'm unsure how to control the values of SynthDef arguments when the
synth is not running.

If I create a SynthDef with some arguments and I want to trigger this
in a Task, how can I control the arguments, f.ex the frequency:

SynthDef("tutorial-sine", { arg out=0, amp=1.0, freq=140, i_dur=1.0;
	var env, sine;
	env = Line.kr(1, 0, i_dur, doneAction: 2, mul: amp);
	sine = SinOsc.ar(freq, mul: env);
	// output two channels on bus 0
	Out.ar(0, [sine, sine]);
}).send(s);

// I then make a task 
o = Task({
	var	startCycle;
	loop{
		startCycle = thisThread.clock.beats;
		0.15.wait;  
		Synth("tutorial-sine");
		(startCycle + 8.0 - thisThread.clock.beats).wait;
	}
})

//then play it
~args = [TempoClock.default, true, [8.0, -0.15]]
o.play(*~args);

//bind n to it - hmm, this won't work, of course
n = Synth.new("tutorial-sine");

//change freq
n.set("freq", 440);					

Of course this doesn't work, because the synth finishes. I want to
bind an argument so that I may control the frequency every time it
gets triggered in the task.

I intend to bind such arguments to a midi controller. 

-- 
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