Sounds like they just shifted the voice with some Fast Fourier transforms - https://stackoverflow.com/questions/63339608/change-the-melody-of-human-speech-using

Sounds like they just shifted the voice with some Fast Fourier transforms - https://stackoverflow.com/questions/63339608/change-the-melody-of-human-speech-using-fft-and-polynomial-interpolation https://stackoverflow.com/questions/63339608/change-the-melo...