The Instr class that is part of crucial library can be used to generate
SynthDefs by combining modular parts.

Here is a class that makes this easier and more expressive. [jrh]

PatchSynthDef.tar.gz

////// this doesn't work reliably yet //////

it can be used like this:

s.boot;

(
Instr(\sine, { arg freq=440, amp=0.1; SinOsc.ar(freq) * amp });
Instr(\panner, { arg input, pan=0; Pan2.ar(input.asArray.sum, pan) });
)


PatchSynthDef("test", [\panner, [\sine, 700], 0]).store;

x = Synth("test");
x.set(\out, 4);
x.set(\out, 0);
x.release;


PatchSynthDef("test", { arg freq=800;	
	[\panner, [\sine, freq * [1, 1.2], 0.1], 0]
}).store;


x = Synth("test");
x.set(\freq, 500);


Pbind(
	\instrument, \test,
	\degree, Prand([0, 3, 5], inf),
	\dur, 0.3
).play;