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Apparatus and method for extracting a direct/ambience signal from a downmix signal and spatial parametric information
Apparatus and method for extracting a direct/ambience signal from a downmix signal and spatial parametric information
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机译:用于从下混信号和空间参数信息中提取直接/环境信号的设备和方法
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摘要
An apparatus for extracting a direct and/or ambience signal from a downmix signal and spatial parametric information, the downmix signal and the spatial parametric information representing a multi-channel audio signal having more channels than the downmix signal, wherein the spatial parametric information comprises inter-channel relations of the multi-channel audio signal, is described. The apparatus comprises a direct/ambience estimator and a direct/ambience extractor. The direct/ambience estimator is configured for estimating a level information of a direct portion and/or an ambient portion of the multi-channel audio signal based on the spatial parametric information. The direct/ambience extractor is configured for extracting a direct signal portion and/or an ambient signal portion from the downmix signal based on the estimated level information of the direct portion or the ambient portion.
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