tenv

tenv is a trigger-based linear Attack/Hold/Release envelope generator. It takes the following arguments:

• trigger signal: a trigger-based signal to control the envelope
• attack: attack time (in seconds)
• hold: hold time (in seconds)
• release: release time (in seconds)

The following patch uses tenv to shape the amplitude of a sine wave:

 # trigger: a 2Hz metronome
 2 metro
 # feed it into envelope generator
 0.001 0.01 0.1 tenv
 # multiply with sine wave
 1000 0.5 sine *