Select

The output is selected from an array of inputs.

Select.ar(which,array)

Select.kr(which,array)

(

SynthDef("help-Select",{ arg out=0;

var a,cycle;

a = [

SinOsc.ar,

Saw.ar,

Pulse.ar

];

cycle = a.size  * 0.5;

Out.ar(out,

Select.ar(LFSaw.kr(1.0,0.0,cycle,cycle),a) * 0.2

)

}).play;

)

Note: all the ugens are continously running. This may not be the most efficient way if each input is  cpu-expensive.

Here used as a sequencer:

(

SynthDef("help-Select-2",{ arg out=0;

var a,s,cycle;

a = Array.fill(32,{ rrand(30,80) }).midicps;

a.postln;

cycle = a.size  * 0.5;

s = Saw.ar(

Select.kr( 

LFSaw.kr(1.0,0.0,cycle,cycle),

a

),

0.2

);

Out.ar(out,s )

}).play;

)

Note that the array is fixed at the time of writing the SynthDef, and the whole array is embedded in the SynthDef file itself.  For small arrays this is more efficient than reading from a buffer.