发明授权
- 专利标题: MDCT-based complex prediction stereo coding
- 专利标题(中): 基于MDCT的复合预测立体声编码
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申请号: US13638901申请日: 2011-04-06
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公开(公告)号: US09378745B2公开(公告)日: 2016-06-28
- 发明人: Heiko Purnhagen , Pontus Carlsson , Lars Villemoes
- 申请人: Heiko Purnhagen , Pontus Carlsson , Lars Villemoes
- 申请人地址: NL Amsterdam, Zuidoost
- 专利权人: Dolby International AB
- 当前专利权人: Dolby International AB
- 当前专利权人地址: NL Amsterdam, Zuidoost
- 国际申请: PCT/EP2011/055374 WO 20110406
- 国际公布: WO2011/124621 WO 20111013
- 主分类号: G10L19/06
- IPC分类号: G10L19/06 ; H04S3/00 ; G10L19/008
摘要:
The invention provides methods and devices for stereo encoding and decoding using complex prediction in the frequency domain. In one embodiment, a decoding method, for obtaining an output stereo signal from an input stereo signal encoded by complex prediction coding and comprising first frequency-domain representations of two input channels, comprises the upmixing steps of: (i) computing a second frequency-domain representation of a first input channel; and (ii) computing an output channel on the basis of the first and second frequency-domain representations of the first input channel, the first frequency-domain representation of the second input channel and a complex prediction coefficient. The method comprises applying independent bandwidth limits for the input channels.
公开/授权文献
- US20130030817A1 MDCT-Based Complex Prediction Stereo Coding 公开/授权日:2013-01-31
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