Slowing Down MP3 music file with FFT

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Michael
Michael on 30 Apr 2014
Answered: Prateekshya on 17 Oct 2024
Is there a way to provide a filename to an algorithm to reduce the playback speed (so ffT there and back) and obtain a high quality slowed version of the tune?
Thank you for any input, MAB

Answers (1)

Prateekshya
Prateekshya on 17 Oct 2024
Hello Michael,
To slow down the audio without altering the pitch, you can use a phase vocoder or time-stretching algorithm. MATLAB does not have a built-in phase vocoder function, but you can use the audioExample function from the Audio System Toolbox, or implement a basic time-stretching algorithm. Please follow this link to know more: https://www.mathworks.com/help/audio/ref/stretchaudio.html
I hope this helps!

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