ABSTRACT
The term phase vocoder is used to describe a group of sound analysissynthesis techniques where the processing of the signal is performed in the frequency domain. Most audio effects, including delays, filters, compression, and distortion, are implemented directly on the incoming signal in the time domain. By contrast, phase vocoder effects use frequency and phase information calculated from Fourier transforms (Chapter 1) to implement a variety of audio effects, including time stretching, pitch shifting, robotization, and whisperization.
