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1. 发明申请

WO2010081892A2 CROSS PRODUCT ENHANCED HARMONIC TRANSPOSITION 审中-公开
标题翻译：交叉产品增强谐波传输
公开(公告)号：WO2010081892A2
公开(公告)日：2010-07-22
申请号：PCT/EP2010050483
申请日：2010-01-15
申请人： DOLBY SWEDEN AB , VILLEMOES LARS , HEDELIN PER
发明人： VILLEMOES LARS , HEDELIN PER
IPC分类号： G10L21/02
CPC分类号： G10L19/265 , G10L19/02 , G10L21/0388
摘要： The present invention relates to audio coding systems which make use of a harmonic transposition method for high frequency reconstruction (HFR). A system and a method for generating a high frequency component of a signal from a low frequency component of the signal is described. The system comprises an analysis filter bank providing a plurality of analysis subband signals of the low frequency component of the signal. It also comprises a non-linear processing unit to generate a synthesis subband signal with a synthesis frequency by modifying the phase of a first and a second of the plurality of analysis subband signals and by combining the phase-modified analysis subband signals. Finally, it comprises a synthesis filter bank for generating the high frequency component of the signal from the synthesis subband signal.
摘要翻译：本发明涉及利用高频重构（HFR）的谐波转置方法的音频编码系统。描述用于从信号的低频分量产生信号的高频分量的系统和方法。该系统包括提供信号的低频分量的多个分析子带信号的分析滤波器组。它还包括非线性处理单元，用于通过修改多个分析子带信号中的第一和第二分析子带信号的相位并通过组合相位修正的分析子带信号来产生具有合成频率的合成子带信号。最后，它包括一个合成滤波器组，用于从合成子带信号产生信号的高频分量。

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