发明名称 |
Method and apparatus for audio decoding |
摘要 |
<p>A method for decoding an audio signal includes: obtaining a lower-band signal component of an audio signal corresponding to a received code stream when the audio signal switches from a first bandwidth to a second bandwidth which is narrower than the first bandwidth; extending the lower-band signal component to obtain higher-band information; performing a time-varying fadeout process on the higher-band information to obtain a processed higher-band signal component; and synthesizing the processed higher-band signal component and the obtained lower-band signal component. With the methods provided in the embodiments of the invention, when an audio signal has a switch from broadband to narrowband, a series of processes such as bandwidth detection, artificial band extension, time-varying fadeout process, and bandwidth synthesis, may be performed to make the switch to have a smooth transition from a broadband signal to a narrowband signal so that a comfortable listening experience may be achieved.
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申请公布号 |
EP2629293(A3) |
申请公布日期 |
2014.01.08 |
申请号 |
EP20130168293 |
申请日期 |
2008.10.20 |
申请人 |
HUAWEI TECHNOLOGIES CO., LTD. |
发明人 |
CHEN, ZHE;YIN, FULIANG;ZANHG, XIAOYU;DAII, JINLIANG;ZHANG, LIBIN |
分类号 |
G10L19/24;G10L21/038 |
主分类号 |
G10L19/24 |
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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