hsc3-0.15: Help/UGen/Demand/dser.help.lhs
> Sound.SC3.UGen.Help.viewSC3Help "Dser"
> Sound.SC3.UGen.DB.ugenSummary "Dser"
> import Sound.SC3.ID
> let {a = dser 'α' 7 (mce [1, 3, 2, 7, 8])
> ;x = mouseX KR 1 40 Exponential 0.1
> ;t = impulse KR x 0
> ;f = demand t 0 a * 30 + 340}
> in audition (out 0 (sinOsc AR f 0 * 0.1))