语音检测器（18），用于检测所述输入信号、所述直接信号声道或所述环境信号声道中出现语音部分的片段；

The device is equipped with a voice detector (18) for detecting a section of the input signal, the direct signal, or the surround channel signal, in which voice portions are present.

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正常语音信号中，一般包含有静音部分，在双向交谈中静音部分能达到60%的比例。

A normal voice signal, in general, contains some silence, the quiet part can reach 60% ratio in the two-way conversation.

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