Invention Grant
- Patent Title: MDCT-based complex prediction stereo coding
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Application No.: US14793297Application Date: 2015-07-07
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Publication No.: US09892736B2Publication Date: 2018-02-13
- Inventor: Heiko Purnhagen , Pontus Carlsson , Lars Villemoes
- Applicant: DOLBY INTERNATIONAL AB
- Applicant Address: NL Amsterdam
- Assignee: Dolby International AB
- Current Assignee: Dolby International AB
- Current Assignee Address: NL Amsterdam
- Main IPC: H04R5/00
- IPC: H04R5/00 ; G10L19/008 ; G10L19/06 ; H04S3/00 ; G10L19/02 ; G10L19/16

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 upmixing can be suspended responsive to control data.
Public/Granted literature
- US20150380001A1 MDCT-BASED COMPLEX PREDICTION STEREO CODING Public/Granted day:2015-12-31
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