(

Server.default = s = Server.internal.boot;

s.waitForBoot({

s.scope;

});

)

// Env is NOT a UGen. It doesn't actually output numbers. But

// it stores data for envelopes (slow moving signals that usually

// shape some aspect of another note, often amplitude).

Env([0, 0.5, 0.5, 0], [0.5, 0.5, 1.0]).plot

// linen(attackTime, sustainTime, releaseTime, level, curve)

// can also be called an ASR envelope of attack/sustain/release

Env.linen(0.5, 0.5, 1, 0.5, 0).plot;

(

var noteObject, note;

noteObject = CtkSynthDef(\oscili_2a, {arg freq, amp, dur;

var osc, osc2, env, envgen;

env = Env.linen(0.5, 1, 1, 0.5, 0);

// EnvGen is the actual UGen for creating the Env.

envgen = EnvGen.kr(env);

osc = SinOsc.ar(440, 0, 1);

Out.ar(0, osc * envgen)

});

note = noteObject.new(1.0, 3.0);

note.freq_(440).amp_(0.5).dur_(3.0);

note.play;

)