AW: Correlation Meter

[Haible Juergen]

	>Does anyone have a circuit diagram of a LED correlation meter
	>which isn`t too difficult to build (meaning not so many special
parts) ?

If you can live with a little error, try this:

Two comparators to detect the zero crossing of L and R signals.
The comparator outputs go into an XNOR gate.
The output of the XNOR goes into a simple RC LP filter, and then
into a bargraph chip.

JH.