发明名称 |
Dynamic noise reduction using linear model fitting |
摘要 |
A speech enhancement system improves the speech quality and intelligibility of a speech signal. The system includes a time-to-frequency converter that converts segments of a speech signal into frequency bands. A signal detector measures the signal power of the frequency bands of each speech segment. A background noise estimator measures a background noise detected in the speech signal. A dynamic noise reduction controller dynamically models the background noise in the speech signal. The speech enhancement renders a speech signal perceptually pleasing to a listener by dynamically attenuating a portion of the noise that occurs in a portion of the spectrum of the speech signal. |
申请公布号 |
US8326616(B2) |
申请公布日期 |
2012.12.04 |
申请号 |
US201113217817 |
申请日期 |
2011.08.25 |
申请人 |
LI XUEMAN;NONGPIUR RAJEEV;HETHERINGTON PHILLIP A.;QNX SOFTWARE SYSTEMS LIMITED |
发明人 |
LI XUEMAN;NONGPIUR RAJEEV;HETHERINGTON PHILLIP A. |
分类号 |
G10L21/02;G10L15/20 |
主分类号 |
G10L21/02 |
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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