[chuck-users] adsr envelopes

i was wondering how to use the stk adsr. the best way i found was the following: sinosc wave => ADSR env => dac; wave.freq(440); env.attackTime(0.3 => float a); env.decayTime(0.2 => float d); env.sustainLevel(0.2 => float s); env.releaseTime(0.3 => float r); a + d => float ontim; 1 => env.keyOn; ontim::second => now; 1 => env.keyOff; r::second => now; is this what you all do? how do you run adsr, is there an easier way?