Re: [sc-dev] Quickly repeated message

[James Harkins <jamshark70@xxxxxxxxx>]

On Thursday, October 31, 2013 4:28:06 AM KST, Lucas Samaruga wrote:
> Hi
>
> (I don't know if to post this here, maybe something is wrong with the
> synth.release message?).
>
> There is something wrong either with my code or the server messages.

If you send /s_new with a gate > 0, and then [/n_set, id, "gate", 0] 
follows within the same hardware buffer's timeframe, then both messages 
will execute at the same time:

1. /s_new (gate > 0) AND /n_set (gate == 0)
2. NOW the synth starts processing, and gate has already been set to 0

So the envelope never opens -- since it never opened, it doesn't reach the 
end and the synth doesn't disappear.

An easy workaround in the SynthDef is to use a timed trigger. Add it to the 
gate and it will guarantee that the gate stays open for at least a full 
control cycle.

SynthDef(\test, { |gate = 1, amp = 0.1, out|
	var sig = SinOsc.ar(ExpRand(400, 800), 0, amp),
	trigWorkaround = Trig1.ar(Impulse.ar(0), ControlDur.ir + 0.001),
	eg = EnvGen.ar(Env.asr(0.005, 1, 0.005), gate + trigWorkaround, 
doneAction: 2);
	Out.ar(out, (sig * eg) ! 2);
}).add;

hjh

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