AW: J.H.'s WASP-filter-clone

[Haible Juergen]

	>wow you must have good hearing JH! ;-)

Unfortunately it's growing worse since spring of this year :-(

	>seriously, i have been caught twice lately by outputs oscillating..
	>an optocupler 3N139 of all things (no bypass on the supply.. osc
	>at 100Mhz, locked up the 80MHz DSP chip input nicely!

The self oscillation of the Wasp Filter is a really pleasant one.
Not the usual MHz stuff you find with shielded cables on opamp
outputs, but rather an undamping of the state variable filter so that
it oscillates at maximum Q setting.

JH.