Steve G wrote:

Cher released a song a year or so ago when the pitch corrector
effect was deliberately overdone.

Vocoder. Old bit of kit, much favoured by Joe Zawinul, the world's
most vocoded Austrian wooly hat wearer. The Cher effect is very
underdone, compared with Joe's oeuvre.

ISTR he favoured a Moog Vocoder although I gather he experimented with a
Bode when they were originally released, the Cher track didn't use one of
those :-)