hsc3-0.18: Help/UGen/linen.help.lhs
> import Sound.SC3 {- hsc3 -}
> g_01 =
> let e = linen (impulse KR 2 0) 0.01 0.6 0.4 DoNothing
> in e * sinOsc AR 440 0 * 0.1
> g_02 =
> let x = mouseX KR (-1) 1 Linear 0.1
> y = mouseY KR 0.01 0.25 Linear 0.1
> e = linen x 1 y 1.0 DoNothing
> in sinOsc AR 440 0 * e