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1.发明公开Efficient and scalable parametric stereo coding for low bitrate audio coding applications 有权高效，可扩展的参数化立体声编码为低比特率的应用
公开(公告)号：EP1603119A3
公开(公告)日：2008-02-06
申请号：EP05017013.3
申请日：2002-07-10
CPC分类号： G10L19/24 , G10L19/008 , G10L19/0204 , H04S1/007 , H04S3/002
摘要： The present invention provides improvements to prior art audio codecs that generate a stereo-illusion through post-processing of a received mono signal. These improvements are accomplished by extraction of stereo-image describing parameters at the encoder side, which are transmitted and subsequently used for control of a stereo generator at the decoder side. Furthermore, the invention bridges the gap between simple pseudo-stereo methods, and current methods of true stereo-coding, by using a new form of parametric stereo coding. A stereo-balance parameter is introduced, which enables more advanced stereo modes, and in addition forms the basis of a new method of stereo-coding of spectral envelopes, of particular use in systems where guided HFR (High Frequency Reconstruction) is employed. As a special case, the application of this stereo-coding scheme in scalable HFR-based codecs is described.
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2.发明公开Efficient and scalable parametric stereo coding for low bitrate audio coding applications 有权高效，可扩展的参数化立体声编码为低比特率的应用
公开(公告)号：EP1603118A3
公开(公告)日：2008-02-20
申请号：EP05017012.5
申请日：2002-07-10
CPC分类号： G10L19/24 , G10L19/008 , G10L19/0204 , H04S1/007 , H04S3/002
摘要： The present invention provides improvements to prior art audio codecs that generate a stereo-illusion through post-processing of a received mono signal. These improvements are accomplished by extraction of stereo-image describing parameters at the encoder side, which are transmitted and subsequently used for control of a stereo generator at the decoder side. Furthermore, the invention bridges the gap between simple pseudo-stereo methods, and current methods of true stereo-coding, by using a new form of parametric stereo coding. A stereo-balance parameter is introduced, which enables more advanced stereo modes, and in addition forms the basis of a new method of stereo-coding of spectral envelopes, of particular use in systems where guided HFR (High Frequency Reconstruction) is employed. As a special case, the application of this stereo-coding scheme in scalable HFR-based codecs is described.
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3.发明公开Efficient and scalable parametric stereo coding for low bitrate audio coding applications 有权自适应Steuerung eines Echo-Nachlaufsfürdie Pseudo-Stereo Audiosynthese。
公开(公告)号：EP1603119A2
公开(公告)日：2005-12-07
申请号：EP05017013.3
申请日：2002-07-10
CPC分类号： G10L19/24 , G10L19/008 , G10L19/0204 , H04S1/007 , H04S3/002
摘要： The present invention provides improvements to prior art audio codecs that generate a stereo-illusion through post-processing of a received mono signal. These improvements are accomplished by extraction of stereo-image describing parameters at the encoder side, which are transmitted and subsequently used for control of a stereo generator at the decoder side. Furthermore, the invention bridges the gap between simple pseudo-stereo methods, and current methods of true stereo-coding, by using a new form of parametric stereo coding. A stereo-balance parameter is introduced, which enables more advanced stereo modes, and in addition forms the basis of a new method of stereo-coding of spectral envelopes, of particular use in systems where guided HFR (High Frequency Reconstruction) is employed. As a special case, the application of this stereo-coding scheme in scalable HFR-based codecs is described.
摘要翻译： 本发明提供对现有技术的音频编解码器的改进，其通过对接收到的单声道信号的后处理而产生立体错觉。 这些改进通过提取在编码器侧的立体图像描述参数来实现，其被传送并随后用于在解码器侧控制立体声发生器。 此外，本发明通过使用新形式的参数立体声编码来弥合简单伪立体声方法和当前真实立体声编码方法之间的差距。 引入立体声平衡参数，其实现更高级的立体声模式，并且还构成了频谱包络的立体编码的新方法的基础，在采用引导HFR（高频重建）的系统中特别有用。 作为特殊情况，描述了这种立体声编码方案在可扩展的基于HFR的编解码器中的应用。
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4.发明公开Efficient and scalable parametric stereo coding for low bitrate audio coding applications 有权Empfängerund Verfahren zum Dekodieren eines parametrischen stereokodierten Bitstrom
公开(公告)号：EP1603118A2
公开(公告)日：2005-12-07
申请号：EP05017012.5
申请日：2002-07-10
CPC分类号： G10L19/24 , G10L19/008 , G10L19/0204 , H04S1/007 , H04S3/002
摘要： The present invention provides improvements to prior art audio codecs that generate a stereo-illusion through post-processing of a received mono signal. These improvements are accomplished by extraction of stereo-image describing parameters at the encoder side, which are transmitted and subsequently used for control of a stereo generator at the decoder side. Furthermore, the invention bridges the gap between simple pseudo-stereo methods, and current methods of true stereo-coding, by using a new form of parametric stereo coding. A stereo-balance parameter is introduced, which enables more advanced stereo modes, and in addition forms the basis of a new method of stereo-coding of spectral envelopes, of particular use in systems where guided HFR (High Frequency Reconstruction) is employed. As a special case, the application of this stereo-coding scheme in scalable HFR-based codecs is described.
摘要翻译： 本发明提供对现有技术的音频编解码器的改进，其通过对接收到的单声道信号的后处理而产生立体错觉。 这些改进通过提取在编码器侧的立体图像描述参数来实现，其被传送并随后用于在解码器侧控制立体声发生器。 此外，本发明通过使用新形式的参数立体声编码来弥合简单伪立体声方法和当前真实立体声编码方法之间的差距。 引入立体声平衡参数，其实现更高级的立体声模式，并且还构成了频谱包络的立体编码的新方法的基础，在采用引导HFR（高频重建）的系统中特别有用。 作为特殊情况，描述了这种立体声编码方案在可扩展的基于HFR的编解码器中的应用。
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