Ptuple combine a list of streams to a stream of lists

superclass: ListPatterns

Ptuple(list, repeats)

list: an Array of Patterns

repeats: an Integer or inf

At each iteration, Ptuple returns a tuple (array) combining the output of each of the patterns in the list.  When any of the patterns returns a nil, Ptuple ends that 'repeat' and restarts all of the streams.

(

var a, b;

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

b = Pseq([65, 76], inf);

c = Ptuple([a, a, b], inf);

x = c.asStream;

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

)

(

var a, b;

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

b = Pseq([65, 76], 3); // stops after 3 cycles

c = Ptuple([a, a, b], 4); // stops after 4 cycles

x = c.asStream;

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

)

Ptuple used as a sequence of pitches (chords)

(

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))

)

(

a = Pseq([73, 71, 69, 69, 65, 64], inf);

b = Pseq([0, 0, 0, 4, 0, 3, 2], inf) + a;

c = Ptuple([a, b], inf);

x = c.asStream;

Routine({

var chord;

loop({

chord = x.next.postln.midicps;

(instrument: \help_sinegrain, freq: chord).play;

0.2.wait;

})

}).play;

)