发明名称 |
SBR BITSTREAM PARAMETER DOWNMIX |
摘要 |
The present document relates to audio decoding and/or audio transcoding. In particular, the present document relates to a scheme for efficiently decoding a number M of audio channels from a bitstream comprising a higher number N of audio channels. In this context a method and system for merging a first and a second source set of spectral band replication (SBR) parameters to a target set of SBR parameters is described. The first and second source set comprise a first and second frequency band partitioning, respectively, which are different from one another. The first source set comprises a first set of energy related values associated with frequency bands of the first frequency band partitioning. The second source set comprises a second set of energy related values associated with frequency bands of the second frequency band partitioning. The target set comprises a target energy related value associated with an elementary frequency band. The method comprises the steps of breaking up the first and the second frequency band partitioning into a joint grid comprising the elementary frequency band; assigning a first value of the first set of energy related values to the elementary frequency band; assigning a second value of the second set of energy related values to the elementary frequency band; and combining the first and second value to yield the target energy related value for the elementary frequency band. |
申请公布号 |
WO2011073201(A2) |
申请公布日期 |
2011.06.23 |
申请号 |
WO2010EP69651 |
申请日期 |
2010.12.14 |
申请人 |
DOLBY INTERNATIONAL AB;KJOERLING, KRISTOFER;THESING, ROBIN |
发明人 |
KJOERLING, KRISTOFER;THESING, ROBIN |
分类号 |
G10L19/00;G10L19/008;G10L21/02;G10L21/038 |
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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