why the pop?

[dockthepod]

Why do I get a loud pop/click at end of this sound? 

Code:

SynthDef( \noise, {
var env = EnvGen.kr(Env.perc, timeScale: 0.5, doneAction: 2);
var noise = LPF.ar(WhiteNoise.ar, 10000 * env, 0.2) * env;
Out.ar(0, [noise, noise])
}).send(s);

[daf]

because the LPF cutoff is going all the way down to 0, which it doesn't like (pop)
add a slight offset like 0.1 to the cutoff and it should be fine.

[dockthepod]

thanks!  that was driving me nuts.

[joshp]

Also... you should envelope the output of the LPF. Filters are often made with digital delays, which means that even if you envelope the input, there may still be sound for a few more samples of output (especially if they have any sort of feedback), so always safer to envelope the output to make sure you zero it out before stopping it.

Josh

[dockthepod]

I am enveloping it, aren't I?

[joshp]

Sorry... didn't see the second * env...

Josh