Reminds me of “auto-tuning” to tweek bad voices into good, on-key vocals...ala Brittany Spears.
IIRC, it was Cher who first used “auto-tuning”.
I had never heard of auto-tuning until a contestant on American Idol accused one of the judges of hypocrisy for criticizing the contestant’s pitch while the judge used auto-tune on her performances. LOL
Back when I was lead singer in a band, there was no auto-tune, though my audiences probably wished there was.