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21. 发明申请

WO2007128662A1 METHOD AND APPARATUS FOR LOSSLESS ENCODING OF A SOURCE SIGNAL, USING A LOSSY ENCODED DATA STREAM AND A LOSSLESS EXTENSION DATA STREAM 审中-公开
标题翻译：使用丢失编码的数据流和无效扩展数据流的信源编码的方法和装置
公开(公告)号：WO2007128662A1
公开(公告)日：2007-11-15
申请号：PCT/EP2007/053784
申请日：2007-04-18
申请人： THOMSON LICENSING , JAX, Peter , KEILER, Florian , WÜBBOLT, Oliver , KORDON, Sven , BÖHM, Johannes
发明人： JAX, Peter , KEILER, Florian , WÜBBOLT, Oliver , KORDON, Sven , BÖHM, Johannes
IPC分类号： G10L19/00 , G10L19/14
CPC分类号： G10L19/0017 , G10L19/04 , G10L19/24
摘要： In lossy based lossless coding a PCM audio signal passes through a lossy encoder (101) to a lossy decoder (102). The lossy encoder provides a lossy bit stream (111). The lossy decoder also provides side information (115) that is used to control (105) the coefficients (118) of a prediction filter (106) that de-correlates the difference signal (104) between the PCM signal and the lossy decoder output. The de-correlated difference signal is lossless encoded (108), providing an extension bit stream (121). Instead of, or in addition to, de-correlating in the time domain, a de-correlation in the frequency domain using spectral whitening can be performed. The lossy encoded bit stream together with the lossless encoded extension bit stream form a lossless encoded bitstream. The invention facilitates enhancing a lossy perceptual audio encoding/decoding by an extension that enables mathematically exact reproduction of the original waveform, and provides additional data for reconstructing at decoder site an intermediate-quality audio signal. The lossless extension can be used to extend the widely used mp3 encoding/decoding to lossless encoding/decoding and superior quality mp3 encoding/decoding.
摘要翻译：在有损耗的无损编码中，PCM音频信号通过有损编码器（101）到有损解码器（102）。有损编码器提供有损比特流（111）。有损解码器还提供侧信息（115），其用于控制（105）将PCM信号和有损解码器输出之间的差信号（104）去相关的预测滤波器（106）的系数（118）。解相关差分信号是无损编码（108），提供扩展比特流（121）。代替或者除了在时域中去相关之外，可以执行使用频谱白化的频域中的去相关。有损编码比特流与无损编码扩展比特流一起形成无损编码比特流。本发明有助于通过能够在数字上准确再现原始波形的扩展来增强有损感知音频编码/解码，并提供用于在解码器位置重建中等质量音频信号的附加数据。无损扩展可用于将广泛使用的mp3编码/解码扩展到无损编码/解码以及优质的mp3编码/解码。

22. 发明申请

WO2007128661A1 METHOD AND APPARATUS FOR LOSSLESS ENCODING OF A SOURCE SIGNAL USING A LOSSY ENCODED DATA STREAM AND A LOSSLESS EXTENSION DATA STREAM 审中-公开
标题翻译：使用丢失的编码数据流和无噪声扩展数据流对信源信号进行无编码编码的方法和装置
公开(公告)号：WO2007128661A1
公开(公告)日：2007-11-15
申请号：PCT/EP2007/053783
申请日：2007-04-18
申请人： THOMSON LICENSING , BÖHM, Johannes , JAX, Peter , KEILER, Florian , WÜBBOLT, Oliver , KORDON, Sven
发明人： BÖHM, Johannes , JAX, Peter , KEILER, Florian , WÜBBOLT, Oliver , KORDON, Sven
IPC分类号： G01L19/00 , G10L19/14
CPC分类号： G10L19/24 , G10L19/0017
摘要： In lossy based lossless coding a PCM audio signal passes through a lossy encoder (41) to a lossy decoder (42). The lossy encoder provides a lossy bit stream. The difference signal (S Diff ) between the PCM signal and the lossy decoder output is lossless encoded (52), providing an extension bit stream. The invention facilitates enhancing a lossy percep tual audio encoding/decoding by an extension that enables mathematically exact reproduction of the original waveform using enhanced de-correlation, and provides additional data for reconstructing at decoder site an intermediate-quality audio signal. The lossless extension can be used to extend the widely used mp3 encoding/decoding to lossless encoding/decoding and superior quality mp3 encoding/de-coding.
摘要翻译：在有损耗的无损编码中，PCM音频信号通过有损编码器（41）到有损解码器（42）。有损编码器提供有损比特流。 PCM信号和有损解码器输出之间的差分信号（S SUB）是无损编码（52），提供扩展位流。本发明有助于通过扩展来增强有损的感知音频编码/解码，其使得能够使用增强的去相关来数学地精确地再现原始波形，并且提供用于在解码器位置重建中等质量音频信号的附加数据。无损扩展可用于将广泛使用的mp3编码/解码扩展到无损编码/解码以及优质的mp3编码/解码。

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