// PowerADSR is a power based ADSR envelope that// allows separate power curves for each envelope phase.// In general, curves under 1.0 are sharp, while curves over 1.0 are soft. // ~ linearEnvelope^curveValue ~ // ~options//// set (duration a, duration d, float s, duration r), default (0.0, 0.0, 1.0, 0.0)//   sets duration for attack, decay, and release phase; sets sustain level//// attack or attackTime (duration a), default 1.0::second//   sets length for the attack phase//// decay or decayTime (duration d), default 1.0::second//   sets length for the decay phase//// release or releasetTime (duration r), default 1:0::second//// sustainLevel (float s), default 0.5//   sets level for the sustain phase//// setCurves (float ac, float dc, float rc), default (1.0, 1.0, 1.0) (all linear)//   sets power curve for attack, decay, and release phase//// attackCurve (float ac), default 1.0 (linear)//   sets power curve for the attack phase//// decayCurve (float dc), default 1.0 (linear)//   sets power curve for the decay phase//// releaseCurve(float rc), default 1.0 (linear)//   sets power curve for the release phase Noise nois;PowerADSR env; // sound chainnois => env => dac; // you can set the envelope on paramter at a timeenv.attackTime(1::second);env.releaseTime(1::second); // defaults to a 1.0 curve, you have to set// the curves for the power functionality // curves under 1.0 are sharperenv.attackCurve(0.5); // curves over 1.0 are softerenv.releaseCurve(2.0); env.keyOn();1::second => now;env.keyOff();1::second => now; // you can also set all the durations and sustain at onceenv.set(2::second, 1::second, 0.8, 0.5::second); // and all the curves can be set at once, without the sustainenv.setCurves(1.75, 1.25, 1.5); env.keyOn();3::second => now;env.keyOff();1.0::second => now; env.set(1::second, 1::second, 0.5, 1::second); // and you can retrieve the state and value of the envelope<<< "Done\t", env.state(), env.value(), "" >>>; env.keyOn();<<< "Attack\t", env.state(), env.value(), "" >>>;1::second => now; <<< "Decay\t", env.state(), env.value(), "" >>>;1::second => now; <<< "Sustain\t", env.state(), env.value(), "" >>>;1::second => now; env.keyOff();<<< "Release\t", env.state(), env.value(), "" >>>;1::second => now; <<< "Done\t", env.state(), env.value(), "" >>>;