(
a = {
	|freq = 40, wid = 0.5|
	Mix(LFPulse.ar(freq *((Array.fill(40, Pxrand((1, 2..20), inf).iter)/1000)+1),
		0, wid, 0.05)
	).dup
}.play;
)

//more distorsion
~widlfo = {Saw.kr(0.5).range(0,1)};
a.set(\wid, ~widlfo);

//stop
a.release;