发明名称 |
ENCODING METHOD, DECODING METHOD, ENCODING DEVICE, AND DECODING DEVICE |
摘要 |
Embodiments of the present invention provide an encoding method, a decoding method, an encoding apparatus, a decoding apparatus, a transmitter, a receiver, and a communications system. The encoding method includes: dividing a to-be-encoded time-domain signal into a low band signal and a high band signal; performing encoding on the low band signal to obtain a low frequency encoding parameter; performing encoding on the high band signal to obtain a high frequency encoding parameter, and obtaining a synthesized high band signal according to the low frequency encoding parameter and the high frequency encoding parameter; performing short-time post-filtering processing on the synthesized high band signal to obtain a short-time filtering signal, where, compared with a shape of a spectral envelope of the synthesized high band signal, a shape of a spectral envelope of the short-time filtering signal is closer to a shape of a spectral envelope of the high band signal; and calculating a high frequency gain based on the high band signal and the short-time filtering signal. A technical solution according to the embodiments of the present invention can improve an encoding and/or decoding effect. |
申请公布号 |
EP2905777(A4) |
申请公布日期 |
2015.09.23 |
申请号 |
EP20130872123 |
申请日期 |
2013.07.25 |
申请人 |
HUAWEI TECHNOLOGIES CO., LTD. |
发明人 |
WANG, BIN;LIU, ZEXIN;MIAO, LEI |
分类号 |
G10L19/26;G10L19/02;G10L21/038 |
主分类号 |
G10L19/26 |
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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