NON-LINEAR POST-PROCESSING FOR SUPER-WIDEBAND ACOUSTIC ECHO CANCELLATION

摘要

A method and system for removing echo from super-wideband audio streams is disclosed. A splitting filter (600) receives input audio streams and splits the received audio streams into a first signal stream of, e.g., 0-8 kHz and a second signal stream of, e.g., 8-16 kHz. A non-linear processor (606) applies a single upper-band suppression factor to the second signal stream of one of the input audio streams to reduce echo.