mostChange a b

Output the input that changed most.

> import Sound.SC3.ID

> let { n = lfNoise0 'α' KR 1
>     ; x = mouseX KR 200 300 Linear 0.1
>     ; f = mostChange (n * 400 + 900) x }
> in audition (out 0 (sinOsc AR f 0 * 0.1))