Pstutter 

superclass: FilterPatterns

Pstutter(n, pattern)

repeat each element n times

n may be a pattern, so the number of times can vary each iteration

(

var a, b;

a = Pstutter(2, Pseq(#[1, 2, 3],inf));

x = a.asStream;

13.do({ x.next.postln; });

)

Pstutter used as a sequence of pitches

(

SynthDef("help-sinegrain", 

{ arg out=0, freq=440, sustain=0.05;

var env;

env = EnvGen.kr(Env.perc(0.01, sustain, 0.2), doneAction:2);

Out.ar(out, SinOsc.ar(freq, 0, env))

}).send(s);

)

(

c = Pstutter(3, Prand([1, 2, 3],inf)*4+65);

x = c.asStream;

Routine({

loop({

Synth("help-sinegrain", [\freq, x.next.midicps]);

0.12.wait;

})

}).play;

)