hsc3-0.11: Help/UGen/Noise/coinGate.help.lhs
> Sound.SC3.UGen.Help.viewSC3Help "CoinGate"
> Sound.SC3.UGen.DB.ugenSummary "CoinGate"
> import Sound.SC3.ID
> let {g = coinGate 'a' 0.2 (impulse KR 10 0)
> ;f = tRand 'b' 300.0 400.0 g}
> in audition (out 0 (sinOsc AR f 0 * 0.1))