3280 and AD533 availability, EN frequency shifter

[Harry Bissell]

A frequency shifter moves an input signal up or down by a constant amount in
Hertz...
so for a 100Hz shift. an input of 100Hz becomes 200Hz, 1000Hz becomes 1100Hz...
much different than a pitch shifter, which keeps the pitch (human perception) change
constant... like up one octave (2 * input frequency)

Uses ???

It makes synth sounds ???

H^)  harry

"Paul R. Higgins" wrote:

> Does anyone know what the current status is on the availibility of the 3280 OTA?
> My Digi-Key catalog claims that they still carry it, but people on the list have
> said otherwise.
>
> I was also looking at the frequency shifter in the EN Builder's Guide and I had
> a couple of questions that I knew the DIYers would have answers to.
>
> 1)  The dumb question first: what the heck does a frequency shifter do, and what
> is it useful for?  I know it's not the same as a pitch transposer, but that's
> all I know.
>
> 2)  Can you still get the AD533 analog multiplier used in the EN frequency
> shifter?  If not, is there a substitution available?
>
> Thanks,
> -PRH
>
> _____________________________________________
> Paul Higgins
> email: higg0008 at tc.umn.edu
> University College, University of Minnesota
> _____________________________________________