Sound source separation echo suppression apparatus, sound source separation echo suppression program, and sound source separation echo suppression method

摘要

PROBLEM TO BE SOLVED: To reduce distortion of sound caused by generation of excessive subtraction due to also suppressing an acoustic echo signal that has been suppressed in sound source separation processing, in echo suppression processing in a sound source separation and echo suppression device.SOLUTION: The sound source separation and echo suppression device comprises: a sound source separation part which calculates a sound source separation gain for separating a sound source of a target sound signal based on amplitude spectrums of a plurality of near end input signals and outputs a sound source separation signal; an echo suppress gain calculation part which calculates an amplitude spectrum of the sound source separation signal and calculates an echo suppress gain based on an amplitude spectrum of an estimate echo signal and the amplitude spectrum of the sound source separation signal; and an echo suppress gain correction part which corrects the echo suppress gain based on the sound source separation gain and the echo suppress gain.SELECTED DRAWING: Figure 1