quadrature audio

[Buck Buchanan]

At 02:12 PM 4/14/99 +0200, Martin Czech wrote:
>what could be usefull applications for a wideband audio quadrature
>circuit?  Ie. a circuit that offers some delayed versions of the input
>and where the outputs have (allmost) 90 DEG phase difference?


Hi Martin!  

Circular Location Modulation!  Quadrature control signal controls 4 VCAs into a discrete 4 channel sound system.  Lots o' fun!  You say "allmost", that's fine for CLM since a little error will not be noticable.

Do you have such a circuit that works across the band (without re-tuning) and at low freqs (I would be very interested in it)?  Such a thing would be nice to to have so you wouldn't have to build a quadrature oscillator.  Stick in any control - output in quadrature!

Take it easy,

Buck