METHOD AND APPARATUS FOR EFFICIENT IMPLEMENTATION OF SINGLE-SIDEBAND FILTER BANKS PROVIDING ACCURATE MEASURES OF SPECTRAL MAGNITUDE AND PHASE

摘要

Accurate measures of estimated spectral power and phase are derived from two spectral representations of each of one or more input signals generated by critically-sampled filter banks. The derived measures may be used in various applications including adaptive bit allocation in perceptual coding systems. An efficient implementation of one particular single-sideban d critically-sampled filter bank is disclosed.