发明公开
EP2471061A1 MULTI-MODE AUDIO SIGNAL DECODER, MULTI-MODE AUDIO SIGNAL ENCODER, METHODS AND COMPUTER PROGRAM USING A LINEAR-PREDICTION-CODING BASED NOISE SHAPING
有权
多模态的声音信号的解码器，多模态TONSIGNALCODIERER，基于线性预测编码方法和计算机程序的噪声整形
- 专利标题： MULTI-MODE AUDIO SIGNAL DECODER, MULTI-MODE AUDIO SIGNAL ENCODER, METHODS AND COMPUTER PROGRAM USING A LINEAR-PREDICTION-CODING BASED NOISE SHAPING
- 专利标题（中）： 多模态的声音信号的解码器，多模态TONSIGNALCODIERER，基于线性预测编码方法和计算机程序的噪声整形
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申请号： EP10760726.9申请日： 2010-10-06
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公开(公告)号： EP2471061A1公开(公告)日： 2012-07-04
- 发明人: NEUENDORF, Max , FUCHS, Guillaume , RETTELBACH, Nikolaus , BAECKSTROEM, Tom , LECOMTE, Jèrèmie , HERRE, Jürgen
- 申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- 申请人地址： Hansastrasse 27c 80686 München DE
- 专利权人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- 当前专利权人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- 当前专利权人地址： Hansastrasse 27c 80686 München DE
- 代理机构： Burger, Markus
- 优先权： US249774P 20091008
- 国际公布： WO2011042464 20110414
- 主分类号： G10L19/02
- IPC分类号： G10L19/02 ; G10L19/14
摘要：
A multi-mode audio signal decoder has a spectral value determinator to obtain sets of decoded spectral coefficients for a plurality of portions of an audio content and a spectrum processor configured to apply a spectral shaping to a set of spectral coefficients in dependence on a set of linear-prediction-domain parameters for a portion of the audio content encoded in a linear-prediction mode, and in dependence on a set of scale factor parameters for a portion of the audio content encoded in a frequency-domain mode. The audio signal decoder has a frequency-domain-to-time-domain converter configured to obtain a time-domain audio representation on the basis of a spectrally-shaped set of decoded spectral coefficients for a portion of the audio content encoded in the linear-prediction mode and for a portion of the audio content encoded in the frequency domain mode. An audio signal encoder is also described.
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