发明名称 |
RAUSCHVERMINDERUNGSVERFAHREN UND -EINRICHTUNG |
摘要 |
The device calculates a first frequency-dependent useful signal level estimator for the frame. The transfer function of a first noise-reducing filter is determined on the basis of the first useful signal level estimator and of a frequency-dependent noise level estimator. A second frequency-dependent useful signal level estimator for the frame is then calculated by combining the spectrum of the input signal and the transfer function of the first noise-reducing filter. The transfer function of a second noise-reducing filter is determined on the basis of the second useful signal level estimator and of the noise level estimator. The latter transfer function is used in a frame filtering operation to produce a signal with reduced noise. |
申请公布号 |
AT472794(T) |
申请公布日期 |
2010.07.15 |
申请号 |
AT20010273554T |
申请日期 |
2001.11.19 |
申请人 |
FRANCE TELECOM |
发明人 |
SCALART, PASCAL;MARRO, CLAUDE;MAUUARY, LAURENT |
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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