{OnePole.ar(BrownNoise.ar, 0.99)}.play
//!2 makes and array out of the previous statement
{OnePole.ar(BrownNoise.ar, 0.99)!2}.play
{RHPF.ar(BrownNoise.ar, 220)!2}.play
{LPF.ar(BrownNoise.ar, 300)!2}.play

// A babbling brook by James McCartney 2007.
{
({RHPF.ar(OnePole.ar(BrownNoise.ar, 0.99), LPF.ar(BrownNoise.ar, 14)
* 400 + 500, 0.03, 0.003)}!2)
+ ({RHPF.ar(OnePole.ar(BrownNoise.ar, 0.99), LPF.ar(BrownNoise.ar, 20)
* 800 + 1000, 0.03, 0.005)}!2)
* 4
}.play