SUPER-WIDEBAND NOISE SUPRESSION

摘要

A time-domain filter bank splits a super-wideband input signal into two signal streams, a low-frequency band (L-band) stream and a high-frequency band (H-band) stream. The L-band stream contains the lower frequency components of the received signal, and the H-band stream contains the higher frequency components of the signal. Noise suppression processing performed on the L-band stream in the frequency-domain generates speech/noise probability and gain filter data that is used for noise suppression processing of the H-band stream, which remains in the time-domain.