Acoustic processing system, acoustic processing device, acoustic processing method, acoustic processing program, and storage medium

Abstract

Herein disclosed is a sound signal processing apparatus ( 10 ), comprising: a speaker unit ( 12 ) for converting a first sound signal to a first sound; sound signal producing means ( 13 ) for producing a second sound signal constituted by at least two different components including an echo component indicative of the sound outputted by the speaker unit ( 12 ), and a voice component indicative of one's voice having a least one leading end; echo component suppressing means ( 14 ) for suppressing the echo component of the second sound signal on the basis of the first and second sound signals to output, as a third sound signal, the suppressed second sound signal; sound signal storing means ( 15 ) for storing the third sound signal outputted by the echo component suppressing means ( 14 ); voice detecting means ( 16 ) for detecting the leading end of the speaker's voice on the basis of the third sound signal outputted by the echo component suppressing means ( 14 ); and controlling means ( 17 ) for controlling the sound signal storing means ( 15 ) to have the sound signal storing means ( 15 ) output, as a fourth sound signal, said third sound signal stored in the time period when said voice is detected on the basis of said third sound signal outputted by said echo component suppressing means, the controlling means ( 17 ) being operative to specify two different clock times on the basis of a predetermined time difference, the clock times including a first clock time at which the leading end of the voice is detected by the voice detecting means ( 16 ), and a second clock time prior to the first clock time, the controlling means ( 17 ) being operative to have the sound signal storing means ( 15 ) start to output the third sound signal stored after the second clock time.

Description

technical field [0001] The present invention relates to a sound processing system, a sound processing device, a sound processing method, a sound processing program and a storage medium, in particular to a sound processing system, a sound processing device, A sound processing method, a sound processing program and a storage medium. Background technique [0002] In the past, as this kind of sound processing device, there are known following video conferencing systems or hands-free calling systems, etc.: in the environment where the voice of the far-end speaker or music is output from the speaker, the sound output from the speaker is picked up with a microphone. and the voice of the near-end speaker, and the picked up sound is sent to the far-end speaker as the voice of the near-end speaker. [0003] In such a conventional sound processing device, in order to solve the problem that the sound output from the speaker is mixed into the microphone as an echo, an echo canceller is ...

AI Technical Summary

Problems solved by technology

[0012] However, in such a conventional sound processing device, there is a problem in that the input voice of the speaker is misrecognized as the background during the time from the input of the voice of the speaker to the time when the input of the voice of the speaker is judged to be input. Noise or echo components, etc., as a result, the estimation accuracy of the echo components is reduced, and the residual echo cannot be reduced

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