Sat Jul 5 21:25:37 EDT 2014

Formant stuff

OSC0 = base freq
OSC1 = cutof
OSC2 = reso

The reso retrigger should not re-enable.  Is that so?  YES!

: osc2
    synth sync:0->2 high? if
	bus:2 low     \ if synced to 0, do one shot
	bus:2 toggle  \ else just osc

    bus>audio ;
So the mixing is symmetric: OSC0 xor (OSC1 and OSC2) but the
retriggering is not.

This can also do other kinds of pulse tricks.