发明授权
- 专利标题： Apparatus and a method for decoding an encoded audio signal
- 专利标题（中）： 用于解码编码音频信号的装置和方法
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申请号： US13004272申请日： 2011-01-11
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公开(公告)号： US08275626B2公开(公告)日： 2012-09-25
- 发明人: Max Neuendorf , Bernhard Grill , Ulrich Kraemer , Markus Multrus , Harald Popp , Nikolaus Rettelbach , Frederik Nagel , Markus Lohwasser , Marc Gayer , Manuel Jander , Virgilio Bacigalupo
- 申请人： Max Neuendorf , Bernhard Grill , Ulrich Kraemer , Markus Multrus , Harald Popp , Nikolaus Rettelbach , Frederik Nagel , Markus Lohwasser , Marc Gayer , Manuel Jander , Virgilio Bacigalupo
- 申请人地址： DE Munich
- 专利权人： Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
- 当前专利权人： Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
- 当前专利权人地址： DE Munich
- 代理机构： Glenn Patent Group
- 代理商 Michael A. Glenn
- 主分类号： G10L19/00
- IPC分类号： G10L19/00
摘要：
An apparatus for decoding an encoded audio signal having first and second portions encoded in accordance with first and second encoding algorithms, respectively, BWE parameters for the first and second portions and a coding mode information indicating a first or a second decoding algorithm, includes first and second decoders, a BWE module and a controller. The decoders decode portions in accordance with decoding algorithms for time portions of the encoded signal to obtain decoded signals. The BWE module has a controllable crossover frequency and is configured for performing a bandwidth extension algorithm using the first decoded signal and the BWE parameters for the first portion, and for performing a bandwidth extension algorithm using the second decoded signal and the bandwidth extension parameter for the second portion. The controller controls the crossover frequency for the BWE module in accordance with the coding mode information.
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