发明名称 |
Robust downlink speech and noise detector |
摘要 |
A voice activity detection process is robust to a low and high signal-to-noise ratio speech and signal loss. A process divides an aural signal into one or more bands. Signal magnitudes of frequency components and the respective noise components are estimated. A noise adaptation rate modifies estimates of noise components based on differences between the signal to the estimated noise and signal variability.
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申请公布号 |
US8554557(B2) |
申请公布日期 |
2013.10.08 |
申请号 |
US201213676856 |
申请日期 |
2012.11.14 |
申请人 |
QNX SOFTWARE SYSTEMS LIMITED |
发明人 |
HETHERINGTON PHILLIP ALAN |
分类号 |
G10L15/20;G10L21/02 |
主分类号 |
G10L15/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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