3484ajr (03/23/83)
Frequency Shifter Encompasses Audio Band
This title appeared in EDN October 27 '82 in the
Design Ideas section. To quote Franklin G Fink's
opening paragraph:
You're probably familiar with the techniques used to
shift (heterodyne) two narrow-band frequencies, as in
a superheterodyne receiver. But do you know that you
can shift the entire audio band to obtain interesting
and useful effects? A block diagram ...
I would like to try out his idea and connect the
circuit to my stereo, the telephone, a microphone
(no feedback!), etc.
Has anyone else in net.land ever experimented with
this before?
Contact me if you have an interest in my results.
By the way, the AD534JH Analog Multiplier as
called for can probably be replaced with a
AD533JH ($ 29.95 vs. $ 9.70)
Having fun with analog and audio,
Al Rooney
American Bell
Whippany 3E-338 x3037