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Device and Method for Graduated Encoding of a Multichannel Audio Signal Based on a Principal Component Analysis
Device and Method for Graduated Encoding of a Multichannel Audio Signal Based on a Principal Component Analysis
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机译:基于主成分分析的多声道音频信号分级编码的装置和方法
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摘要
A system and a method for the scalable coding of a multi-channel audio signal comprising a principal component analysis (PCA) transformation of at least two channels (L, R) of the audio signal into a principal component (CP) and at least one residual sub-component (r) by rotation defined by a transformation parameter (θ), comprising the following steps: formation of a frequency subband-based residual structure (Sfr) on the basis of the at least one residual sub-component (r), and definition of a coded audio signal (SC) comprising the principal component (CP), at least one residual structure (Sfr) of a frequency subband and the transformation parameter (θ).
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机译:一种用于多通道音频信号的可伸缩编码的系统和方法,包括将音频信号的至少两个通道(L,R)转换为主成分(CP)和至少一个的主成分分析(PCA)由变换参数(θ)定义的旋转产生的残余子分量(r),包括以下步骤:在至少一个基础上形成基于频率子带的残余结构(Sf r Sub>)一个残余子分量(r),以及包括主分量(CP),频率子带的至少一个残余结构(Sf r Sub>)和变换的编码音频信号(SC)的定义参数(θ)。
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