基本信息:
- 专利标题： POST-PROCESSING GAINS FOR SIGNAL ENHANCEMENT
- 专利标题（中）：后处理增益改善信号
- 申请号：EP13714812.8 申请日：2013-03-21
- 公开(公告)号：EP2828852B1 公开(公告)日：2016-03-16
- 发明人： SUN, Xuejing , DICKINS, Glenn N.
- 申请人： Dolby Laboratories Licensing Corporation
- 申请人地址： 100 Potrero Avenue San Francisco, CA 94103-4813 US
- 专利权人： Dolby Laboratories Licensing Corporation
- 当前专利权人： Dolby Laboratories Licensing Corporation
- 当前专利权人地址： 100 Potrero Avenue San Francisco, CA 94103-4813 US
- 代理机构： Dolby International AB Patent Group Europe
- 优先权： CN201210080971 20120323; US201261618503P 20120330
- 国际公布： WO2013142661 20130926
- 主分类号： G10L21/0316
- IPC分类号： G10L21/0316 ; H03G3/32 ; G10K11/16
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.
公开/授权文献:
- EP2828852A1 POST-PROCESSING GAINS FOR SIGNAL ENHANCEMENT 公开/授权日：2015-01-28
IPC结构图谱:
| G | 物理 |
| --G10 | 乐器；声学 |
| ----G10L | 语言分析或合成；语言识别 |
| ------G10L21/00 | 为了改变语音信号的品质或其可理解性而处理语音信号以产生另一种可听的或非可听的信号，例如视觉信号、触觉信号 |
| --------G10L21/003 | .改变声音质量，例如音调或共振峰 |
| ----------G10L21/0316 | ..通过改变振幅 |