> Sound.SC3.UGen.Help.viewSC3Help "Demand"
    > Sound.SC3.UGen.DB.ugenSummary "Demand"

> import Sound.SC3 {- hsc3 -}
>
> g_01 :: UId m => m UGen
> g_01 = do
>   r <- dustM KR 1
>   s <- dgeomM dinf (midiCPS 72) (midiRatio 1)
>   let t = impulse KR 10 0
>       f = demand t r s
>       o = sinOsc AR (mce [f,f + 0.7]) 0
>   return (max (cubed o) 0 * 0.1)
>
> g_02 =
>     let n = diwhite 'α' dinf 60 72
>         t = impulse KR 10 0
>         s = midiCPS n
>         f = demand t 0 s
>         o = sinOsc AR (mce [f,f + 0.7]) 0
>     in cubed (cubed o) * 0.1

audio rate (poll output is equal for x1 and x2)

> g_03 =
>     let i = lfNoise2 'α' AR 8000
>         d = dseq 'β' dinf (mce [i])
>         x = mouseX KR 1 3000 Exponential 0.2
>         t = impulse AR x 0
>         x1 = demand t 0 d
>         x2 = latch i t
>         s = mce2 x1 x2
>         p = poll t s (mce2 (label "x1") (label "x2")) 0
>         o = sinOsc AR (s * 300 + 400) 0 * 0.1
>     in mrg2 o p