hsc3-0.18: Help/UGen/beatTrack.help.lhs
> import Sound.SC3 {- hsc3 -}
> withSC3 (async (b_alloc 10 1024 1))
> g_01 =
> let i = soundIn 0
> x = mouseX KR (-1) 1 Linear 0.2
> [b, h, q, t] = mceChannels (beatTrack KR (fft' 10 i) x)
> f = mce [440, 660, 880]
> a = mce [0.4, 0.2, 0.1]
> s = mix (sinOsc AR f 0 * a * decay (mce [b, h, q]) 0.05)
> in i + s