发明名称 |
Method and apparatus for measuring the noise content of transmitted speech |
摘要 |
A noise filter technique estimates noise in speech that has been processed by Call Multiplication Equipment. The received signal has speech frames and interspersed fill-noise frames inserted at a satellite signal receiving station. The filtering technique removes the fill-noise from the signal. The remaining speech frames are analyzed such that the speech frames having the lowest power values are used to create a histogram of power/frequency. This histogram contains information from which the noise-in-speech power spectrum is derived.
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申请公布号 |
US5950154(A) |
申请公布日期 |
1999.09.07 |
申请号 |
US19960680760 |
申请日期 |
1996.07.15 |
申请人 |
AT&T CORP. |
发明人 |
MEDAUGH, RAYMOND STEPHEN;SHAYA, RONALD |
分类号 |
H04B1/10;G10L21/02;(IPC1-7):G10L3/02;G10L9/00 |
主分类号 |
H04B1/10 |
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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