hsc3-0.18: Help/UGen/dswitch1.help.lhs
> import Sound.SC3 {- hsc3 -}
> g_01 =
> let x = mouseX KR 0 4 Linear 0.1
> y = mouseY KR 1 15 Linear 0.1
> t = impulse KR 3 0
> w = dwhite 'α' dinf 20 23
> n = dswitch1 'β' x (mce [1, 3, y, 2, w])
> f = demand t 0 n * 30 + 340
> in sinOsc AR f 0 * 0.1