Re: Analog Pitch Shifter

Ron N wrote:

...

A type of additive pitch shift can be produced by using
a slightly mistuned single-side-band receiver, although
that's probably not what the OP wants.

That's a frequency shifter, not a pitch shifter. All frequencies are shifted the same amount rather than multiplied by a constant.

BTW, I consider the rotating-head pitch shifters to be mechanical, rather than analog. Of course, the usual analog electronics were used for record and playback, but nowadays that part could be done digitally.

The first commercial application of rotating-head was time compression of audio. A good steno can type faster than many executives talk, and speeded-up playback of dictation tapes made for efficient transcription. As far as I know, early video slo-mo was accomplished simply by slowing the tape on a spiral-scan recorder. It works with VHS and Betamax.

jerry
--
Engineering is the art of making what you want from things you can get.
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
.