8.2 Phase Vocoder Basics.

The article discusses the notations of terms for the application to digital audio effects. The computation of the time-varying spectrum of an input signal can also be interpreted as a parallel bank of bandpass filters. Each bandpass signal is obtained by filtering the input signal with the corresponding bandpass filter. The interpretation offers analysis of a signal by a filter bank, modification of the short-time spectrum on a sample-by-sample basis and synthesis by a summation of the bandpass signals.