toggleFF trig

Toggle flip flop. Toggles between zero and one upon receiving a
trigger.

trig - trigger input

> import Sound.SC3.ID

> let { t = dust 'a' AR (xLine KR 1 1000 60 DoNothing)
>     ; t' = toggleFF t * 400 + 800 }
> in audition (out 0 (sinOsc AR t' 0 * 0.1))