Invention Grant
- Patent Title: MDCT-based complex prediction stereo coding
- Patent Title (中): 基于MDCT的复合预测立体声编码
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Application No.: US13638901Application Date: 2011-04-06
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Publication No.: US09378745B2Publication Date: 2016-06-28
- Inventor: Heiko Purnhagen , Pontus Carlsson , Lars Villemoes
- Applicant: Heiko Purnhagen , Pontus Carlsson , Lars Villemoes
- Applicant Address: NL Amsterdam, Zuidoost
- Assignee: Dolby International AB
- Current Assignee: Dolby International AB
- Current Assignee Address: NL Amsterdam, Zuidoost
- International Application: PCT/EP2011/055374 WO 20110406
- International Announcement: WO2011/124621 WO 20111013
- Main IPC: G10L19/06
- IPC: G10L19/06 ; H04S3/00 ; G10L19/008

Abstract:
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.
Public/Granted literature
- US20130030817A1 MDCT-Based Complex Prediction Stereo Coding Public/Granted day:2013-01-31
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