  greater_than ; c.f . equal_to ; trigger an envelope
let e = envGen kr (sinOsc ar 1 0 `greater_than` 0) 1 0 1 DoNothing (envPerc 0.01 1)
in sinOsc ar 440 0 * e * 0.1

  greater_than ; c.f . equal_to ; trigger an envelope
let e = envGen kr (sinOsc ar 1 0 `greater_than` 0) 1 0 1 DoNothing (envPerc 0.01 1)
in sinOsc ar 440 0 * e * 0.1
