Improved phase vocoder time-scale modification of audio

@article{Laroche1999ImprovedPV,
  title={Improved phase vocoder time-scale modification of audio},
  author={Jean Laroche and Mark Dolson},
  journal={IEEE Trans. Speech Audio Process.},
  year={1999},
  volume={7},
  pages={323-332}
}
The phase vocoder is a well established tool for time scaling and pitch shifting speech and audio signals via modification of their short-time Fourier transforms (STFTs. [] Key Result Moreover, the modified phase vocoder is shown to provide a factor-of-two decrease in computational cost.

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