A Shot-in-the-Dark Question

[KA4HJH]

>>Has anyone ever seen a design for a heterodyning
>>based vocoder? I'm pretty sure that they exist but,
>>I can't seem to find any info on them.
>
>You might see if you can track down the old Electronotes "frequency
>shifter."  AFAIK, It was a SSB/heterodyning based module.
>
>It might have been in the EN Preferred Circuits Collection, too.

It is.


See also Juergen's frequency shifter project:

http://www.synthfool.com/diy/hj.html


Now what does this have to do with vocoding?


-- 
Terry Bowman, KA4HJH
"The Mac Doctor"