发明名称 |
Apparatus and method for voice activity detection |
摘要 |
It is provided a voice activity decision apparatus capable of accurately performing the decision on the state being associated with a sound interval or a silence interval also in terms of the input signal having many aperiodic components and/or plural mixed different periodic components. The apparatus 1 comprises: an autocorrelation calculating unit 11 for calculating autocorrelation values of an input signal; a delay calculating unit 12 for calculating plural delays at which autocorrelation values calculated by the autocorrelation calculating unit 11 become maximums; a noise deciding unit 13 for deciding whether the input signal is a noise or not based on the plurality of delays calculated by the delay calculating unit 12; and an activity decision unit 14 for performing the activity decision in terms of the input signal based on results of decision by the noise deciding unit 13 and the input signal.
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申请公布号 |
US2005154583(A1) |
申请公布日期 |
2005.07.14 |
申请号 |
US20040024267 |
申请日期 |
2004.12.23 |
申请人 |
NAKA NOBUHIKO;OHYA TOMOYUKI |
发明人 |
NAKA NOBUHIKO;OHYA TOMOYUKI |
分类号 |
G10L11/02;H03M7/30;(IPC1-7):G10L19/00 |
主分类号 |
G10L11/02 |
代理机构 |
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主权项 |
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地址 |
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