More Recent Phase Continuation Methods for the Time-Scaling Phase Vocoder

See [238] for these and other recent articles on time-scale modification using the phase vocoder:

• Miller Puckette: Phase-Locked Vocoder

• Jean Laroche and Mark Dolson: Phase-Vocoder Processed in Separate Frequency Bands

This work indicates it is largely sufficient to preserve relative phase across FFT bins (i.e., satisfy condition (2)) only at spectral peaks and their immediate vicinity.

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Order a Hardcopy of Spectral Audio Signal Processing

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written by Julius Orion Smith III
Julius Smith's background is in electrical engineering (BS Rice 1975, PhD Stanford 1983). He is presently Professor of Music and Associate Professor (by courtesy) of Electrical Engineering at Stanford's Center for Computer Research in Music and Acoustics (CCRMA), teaching courses and pursuing research related to signal processing applied to music and audio systems. See http://ccrma.stanford.edu/~jos/ for details.