| 发明名称 |
Method and arrangement for controlling smoothing of stationary background noise |
| 摘要 |
In a method of smoothing stationary background noise in a telecommunication speech session, initially receiving and decoding S10 a signal representative of a speech session, where the signal comprises both a speech component and a background noise component. Subsequently, providing S20 a noisiness measure for the signal, and adaptively S30 smoothing the background noise component based on the provided noisiness measure. |
| 申请公布号 |
US9318117(B2) |
申请公布日期 |
2016.04.19 |
| 申请号 |
US200812530341 |
申请日期 |
2008.02.27 |
| 申请人 |
Telefonaktiebolaget LM Ericsson (Publ) |
发明人 |
Bruhn Stefan |
| 分类号 |
G10L19/26;G10L21/02;G10L19/012 |
主分类号 |
G10L19/26 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method of smoothing stationary background noise in a telecommunication speech session, comprising:
receiving and decoding a signal representative of a speech session, said signal comprising both a speech component and a background noise component, providing a noisiness measure for said signal, said noisiness measure being indicative of the predictability of the signal, said predictability being defined in terms of a Linear Predictive Coder (LPC) prediction gain of said signal; and adaptively smoothing said background noise component based on said provided noisiness measure, wherein said smoothing operation is indirectly controlled by said noisiness measure based on a smoothing control parameter that follows a detected increase of said noisiness measure gradually, and follows a detected reduction of said noisiness measure immediately. |
| 地址 |
Stockholm SE |
