发明名称 |
Method for encoding signal, and method for decoding signal |
摘要 |
Method, apparatus, and system for encoding and decoding signals are disclosed. The encoding method includes: converting a first-domain signal into a second-domain signal; performing Linear Prediction (LP) processing and Long-Term Prediction (LTP) processing for the second-domain signal; obtaining a long-term flag according to a decision criterion; obtaining a second-domain predictive signal according to the LP processing result and the LTP processing result when the long-term flag is a first flag; or obtaining a second-domain predictive signal according to the LP processing result when the long-term flag is a second flag; converting the second-domain predictive signal into a first-domain predictive signal, calculating a first-domain predictive residual signal; and outputting a bit stream that includes the first-domain predictive residual signal. Subsequent encoding or decoding process is performed adaptively according to the long-term flag; and it is not always necessary to consider the LTP processing result, thus improving the compression performance of codec.
|
申请公布号 |
US8515744(B2) |
申请公布日期 |
2013.08.20 |
申请号 |
US201113172575 |
申请日期 |
2011.06.29 |
申请人 |
ZHANG DEJUN;MIAO LEI;XU JIANFENG;QI FENGYAN;ZHANG QING;LI LIXIONG;MA FUWEI;GAO YANG;HUAWEI TECHNOLOGIES CO., LTD. |
发明人 |
ZHANG DEJUN;MIAO LEI;XU JIANFENG;QI FENGYAN;ZHANG QING;LI LIXIONG;MA FUWEI;GAO YANG |
分类号 |
G10L19/00;G10L19/12 |
主分类号 |
G10L19/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|