发明名称 |
Advanced stereo coding based on a combination of adaptively selectable left/right or mid/side stereo coding and of parametric stereo coding |
摘要 |
<p>The application relates to audio encoder and decoder systems. An embodiment of the encoder system comprises a downmix stage for generating a downmix signal and a residual signal based on a stereo signal. In addition, the encoder system comprises a parameter determining stage for determining parametric stereo parameters such as an inter-channel intensity difference and an inter-channel cross-correlation. Preferably, the parametric stereo parameters are time- and frequency-variant. Moreover, the encoder system comprises a transform stage. The transform stage generates a pseudo left/right stereo signal by performing a transform based on the downmix signal and the residual signal. The pseudo stereo signal is processed by a perceptual stereo encoder. For stereo encoding, left/right encoding or mid/side encoding is selectable. Preferably, the selection between left/right stereo encoding and mid/side stereo encoding is time- and frequency-variant.</p> |
申请公布号 |
EP2626855(B1) |
申请公布日期 |
2014.09.10 |
申请号 |
EP20130166660 |
申请日期 |
2010.03.05 |
申请人 |
DOLBY INTERNATIONAL AB |
发明人 |
PURNHAGEN, HEIKO;CARLSSON, PONTUS;KJOERLING, KRISTOFER |
分类号 |
G10L19/00;G10L19/008;G10L19/18 |
主分类号 |
G10L19/00 |
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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