Book on DAFX - Digital Audio Effects (Second Edition) Edited by Udo Zölzer ISBN: 978-0-470-66599-2 John Wiley & Sons, 2011

Chapter 7

D. Arfib, F. Keiler, U. Zölzer, V. Verfaille and J. Bonada

Contents

• Introduction
• Phase vocoder basics
  • Filter bank summation model
  • Block-by-block analysis/synthesis model
• Phase vocoder implementations
  • Filter bank approach
  • Direct FFT/IFFT approach
  • FFT analysis/sum of sinusoids approach
  • Gaboret approach
  • Phase unwrapping and instantaneous frequency
• Phase vocoder effects
  • Time-frequency filtering
  • Dispersion
  • Time stretching
  • Pitch shifting
  • Stable/transient components separation
  • Mutation between two sounds
  • Robotization
  • Whisperization
  • Denoising
  • Spectral panning
• Conclusion
• References

Contents