发明名称 |
POST-PROCESSING GAINS FOR SIGNAL ENHANCEMENT |
摘要 |
A method, an apparatus, and logic to post-process raw gains determined by input processing to generate post-processed gains, comprising using one or both of delta gain smoothing and decision-directed gain smoothing. The delta gain smoothing comprises applying a smoothing filter to the raw gain with a smoothing factor that depends on the gain delta: the absolute value of the difference between the raw gain for the current frame and the post-processed gain for a previous frame. The decision-directed gain smoothing comprises converting the raw gain to a signal-to-noise ratio, applying a smoothing filter with a smoothing factor to the signal-to-noise ratio to calculate a smoothed signal-to-noise ratio, and converting the smoothed signal-to-noise ratio to determine the second smoothed gain, with smoothing factor possibly dependent on the gain delta. |
申请公布号 |
EP2828852(A1) |
申请公布日期 |
2015.01.28 |
申请号 |
EP20130714812 |
申请日期 |
2013.03.21 |
申请人 |
DOLBY LABORATORIES LICENSING CORPORATION |
发明人 |
SUN, XUEJING;DICKINS, GLENN N. |
分类号 |
G10L21/0316;G10K11/16;H03G3/32 |
主分类号 |
G10L21/0316 |
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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