hsc3-0.18: Help/UGen/tExpRand.help.lhs
> import Sound.SC3 {- hsc3 -}
> g_00 =
> let f = tExpRand 'α' 300.0 3000.0 (dust 'β' KR 10)
> in sinOsc AR f 0 * 0.1
> g_01 :: UId m => m UGen
> g_01 = do
> f <- tExpRandM 300.0 3000.0 =<< dustM KR 10
> return (sinOsc AR f 0 * 0.1)