hsc3-0.11: Help/UGen/FFT/pv_BrickWall.help.lhs
> Sound.SC3.UGen.Help.viewSC3Help "PV_BrickWall"
> Sound.SC3.UGen.DB.ugenSummary "PV_BrickWall"
> import Sound.SC3.ID
> withSC3 (\fd -> async fd (b_alloc 10 2048 1))
> let {n = whiteNoise 'a' AR
> ;x = mouseX' KR (-1) 1 Linear 0.1}
> in audition (out 0 (ifft' (pv_BrickWall (fft' 10 (n * 0.2)) x)))