| 发明名称 |
FRAME ERROR CONCEALMENT |
| 摘要 |
A frame error concealment method based on frames including transform coefficient vectors including the following steps: It tracks (S11) sign changes between corresponding transform coefficients of predetermined sub-vectors of consecutive good stationary frames. It accumulates (S12) the number of sign changes in corresponding sub-vectors of a predetermined number of consecutive good stationary frames. It reconstructs (S13) an erroneous frame with the latest good stationary frame, but with reversed signs of transform coefficients in sub-vectors having an accumulated number of sign changes that exceeds a predetermined threshold. |
| 申请公布号 |
US2015379998(A1) |
申请公布日期 |
2015.12.31 |
| 申请号 |
US201314767499 |
申请日期 |
2013.11.12 |
| 申请人 |
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) |
发明人 |
NÄSLUND Sebastian;GRANCHAROV Volodya;SVEDBERG Jonas |
| 分类号 |
G10L19/005 |
主分类号 |
G10L19/005 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A frame error concealment method based on frames including transform coefficient vectors, the method comprising:
tracking sign changes between corresponding transform coefficients of predetermined sub-vectors, each comprising a plurality of coefficients, of consecutive good stationary frames; accumulating the number of sign changes in corresponding sub-vectors of a predetermined number of consecutive good stationary frames; and reconstructing an erroneous frame with the latest good stationary frame, but with reversed signs of transform coefficients in sub-vectors having an accumulated number of sign changes that exceeds a predetermined threshold. |
| 地址 |
Stockholm SE |
