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1. 发明申请

WO2011042464A1 MULTI-MODE AUDIO SIGNAL DECODER, MULTI-MODE AUDIO SIGNAL ENCODER, METHODS AND COMPUTER PROGRAM USING A LINEAR-PREDICTION-CODING BASED NOISE SHAPING 审中-公开
标题翻译：多模式音频信号解码器，多模式音频信号编码器，使用基于线性预测编码的噪声形状的方法和计算机程序
公开(公告)号：WO2011042464A1
公开(公告)日：2011-04-14
申请号：PCT/EP2010/064917
申请日：2010-10-06
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , NEUENDORF, Max , FUCHS, Guillaume , RETTELBACH, Nikolaus , BAECKSTROEM, Tom , LECOMTE, Jèrèmie , HERRE, Jürgen
发明人： NEUENDORF, Max , FUCHS, Guillaume , RETTELBACH, Nikolaus , BAECKSTROEM, Tom , LECOMTE, Jèrèmie , HERRE, Jürgen
IPC分类号： G10L19/02 , G10L19/14
CPC分类号： G10L19/20 , G10L19/022
摘要： A multi-mode audio signal decoder for providing a decoded representation of an audio content on the basis of an encoded representation of the audio content comprises a spectral value determinator configured to obtain sets of decoded spectral coefficients for a plurality of portions of the audio content. The audio signal decoder also comprises a spectrum processor configured to apply a spectral shaping to a set of spectral coefficients, or to a pre-processed version thereof, in dependence on a set of linear-prediction-domain parameters for a portion of the audio content encoded in a linear-prediction mode, and to apply a spectral shaping to a set of decoded spectral coefficients, or a pre-processed version thereof, 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 comprises a frequency-domain-to-time-domain converter configured to obtain a time-domain representation of the audio content 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 to obtain a time domain representation of the audio content on the basis of a spectrally shaped set of decoded spectral coefficients for a portion of the audio content encoded in the frequency domain mode. An audio signal encoder is also described.
摘要翻译：用于基于音频内容的编码表示提供音频内容的解码表示的多模式音频信号解码器包括：频谱值确定器，被配置为获得音频内容的多个部分的解码频谱系数集合。音频信号解码器还包括频谱处理器，其被配置为根据用于音频内容的一部分的一组线性预测域参数将频谱整形应用于一组频谱系数或其预处理版本以线性预测模式编码，并且根据用于以频率编码的音频内容的一部分的一组缩放因子参数将频谱整形应用于一组解码频谱系数或其预处理版本域名模式。音频信号解码器包括频域 - 时域转换器，其被配置为基于用于编码的音频内容的一部分的解码频谱系数的频谱形状集合来获得音频内容的时域表示线性预测模式，并且基于在频域模式中编码的音频内容的一部分的解码频谱系数的频谱整形集合来获得音频内容的时域表示。还描述了音频信号编码器。

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