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A concept to bridge the gap between parametric multi-channel audio coding and matrix surround multi-channel coding
A concept to bridge the gap between parametric multi-channel audio coding and matrix surround multi-channel coding
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机译:弥合参数化多声道音频编码和矩阵环绕多声道编码之间的鸿沟的概念
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摘要
The purpose of the invention is to bridge the gap between parametric multi-channel audio coding and matrixed-surround multi-channel coding by gradually improving the sound of an up-mix signal while raising the bit-rate consumed by the side-information starting from 0 up to the bit-rates of the parametric methods. More specifically, it provides a method of flexibly choosing an "operating point" somewhere between matrixed-surround (no side-information, limited audio quality) and fully parametric reconstruction (full side-information rate required, good quality). This operating point can be chosen dynamically (i.e. varying over time) and in response to the permissible side-information rate, as it is dictated by the individual application.
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