Speech signal processing device, method and storage medium thereof

Abstract

The present invention provides a voice signal processing device, method and storage medium thereof, which can eliminate echo signals contained in input signals from multiple microphones through a simple circuit structure. This device has: an output unit, which outputs a received speech signal; and an input unit, which synthesizes signals respectively input from a plurality of microphones to generate a transmitted speech signal. Sound collection is performed to generate an echo signal corresponding to the echo component and a voice signal corresponding to the speaker's voice; the cancellation signal generation unit generates a cancellation signal for canceling the echo signal contained in the transmission signal according to the filter coefficient; a part for calculating filter coefficients; and a cancel part for generating an echo cancel signal based on the transmitted signal and the cancel signal, the control part calculates individual filter coefficients respectively corresponding to a plurality of microphones, and synthesizes the individual filter coefficients to calculate the filter coefficients .

Description

technical field [0001] The invention relates to a voice signal processing device, a voice signal processing method and a storage medium storing a voice signal processing program. Background technique [0002] In recent years, communication conference systems via communication lines such as the Internet, such as telephone conference systems or video conference systems, are often applied to conferences held between physically separated locations. With this type of communication conference system, according to the voice signal received from one of the places (hereinafter referred to as "received signal"), the speaker at the other place outputs the voice and the microphone at the other place collects the voice, which will lead to Echo occurs. [0003] The echo is generally suppressed and eliminated by the echo canceller of the communication conference system. A general echo canceller includes an adaptive filter for generating a cancellation signal for canceling the echo signal...

AI Technical Summary

Problems solved by technology

With this type of communication conference system, according to the voice signal received from one of the places (hereinafter referred to as "received signal"), the speaker at the other place outputs the voice and the microphone at the other place collects the voice, which will lead to echo

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