发明名称 |
Apparatus and method for noise attenuation in a speech recognition system |
摘要 |
The noise suppressor utilizes statistical characteristics of the noise signal to attenuate amplitude values of the noisy speech signal that have a probability of containing noise. In one embodiment, the noise suppressor utilizes an attenuation function having a shape determined in part by a noise average and a noise standard deviation. In a further embodiment, the noise suppressor also utilizes an adaptive attenuation coefficient that depends on signal-to-noise conditions in the speech recognition system.
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申请公布号 |
US6768979(B1) |
申请公布日期 |
2004.07.27 |
申请号 |
US19990282809 |
申请日期 |
1999.03.31 |
申请人 |
SONY CORPORATION;SONY ELECTRONICS INC. |
发明人 |
MENENDEZ-PIDAL XAVIER;TANAKA MIYUKI;CHEN RUXIN |
分类号 |
F16J15/43;G10L15/02;G10L21/02;G11B17/028;G11B19/20;(IPC1-7):G10L21/02 |
主分类号 |
F16J15/43 |
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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