Env.adsr - constant sound, release function not having desired effect

Questions
1

Hi,

I’m having trouble understanding how the Env.adsr works. Running the code below I can hear the effect of the envelope on amplitude, but the sound does not go away afterwards - Am I missing something? A gate maybe? How do I make the envelope stop the sound after the release function is complete?

Thank you so much!


(
SynthDef(\envTest, {

	arg atk=0.1, dec=0.2, sus=0.1, rel=0.2, 
	out=0, amp=0.2;
	
	var sig, env;
	
	env = EnvGen.ar(Env.adsr(atk, dec, sus, rel), doneAction:2);
	sig = SinOsc.ar(440);
	
	Out.ar(out, sig * amp * env);
		
}).add;
)


Synth(\envTest);
2

An ADSR envelope – in all synthesizers – stays open until it’s released by “closing the gate” (gate signal falls to 0).

You haven’t specified a gate, so it’s using the default = 1.

So your SynthDef states that the envelope should never close.

(
SynthDef(\envTest, {
	
	arg atk = 0.1, dec = 0.2, sus = 0.1, rel = 0.2, 
	out = 0, amp = 0.2, gate = 1;
	
	var sig, env;
	
	env = EnvGen.ar(Env.adsr(atk, dec, sus, rel), gate, doneAction:2);
	sig = SinOsc.ar(440);
	
	Out.ar(out, sig * amp * env);
	
}).add;
)

hjh

3

Hi,

Thanks so much for getting back to me.

This makes sense, I think I’m being a little silly - not sure I need Env.adsr at all.

Seem to be getting what I’m after with the following:

Env([0, 1, sus, 0], [atk, dec, rel])

Thanks again for your help.