Comment by kazinator

Over twenty years ago I discovered Jens Johannson's* site, where he revealed he was into programming.

He hacked on someone's Phase Vocoder code:

https://www.panix.com/~jens/pvoc.par

I built Jens' version and used it for cleanly slowing down some audio tracks.

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* Keyboard player of Stratovarious, formerly with Yngwie Malmsteen's Rising Force; https://en.wikipedia.org/wiki/Jens_Johansson