Pseq

superclass: ListPattern

cycles over a list of values. The repeats variable gives

the number of times to repeat the entire list.

Pseq(list, repeats, offset)

(

var a, b;

a = Pseq.new(#[1, 2, 3], 2); // repeat twice

b = a.asStream;

7.do({ b.next.postln; });

)

Pseq also has an offset argument which gives a starting offset into the list.

(

var a, b;

a = Pseq.new(#[1, 2, 3, 4], 3, 2); // repeat 3, offset 2

b = a.asStream;

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

)

You can pass a function for the repeats variable that gets evaluated when the stream is created.

(

var a, b;

a = Pseq.new(#[1, 2], { rrand(1, 3) }); // repeat 1,2, or 3 times

b = a.asStream;

7.do({ b.next.postln; });

)

If you specify the value inf for the repeats variable, then it will repeat indefinitely.

(

var a, b;

a = Pseq.new(#[1, 2, 3], inf); // infinite repeat

b = a.asStream;

10.do({ b.next.postln; });

)

Pseq 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);

)

(

a = Pseq(#[60, 61, 63, 65, 72], inf).asStream;

Routine({

loop({

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

0.2.wait;

})

}).play;

)