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1. 发明申请

WO2005001814A1 IMPROVING QUALITY OF DECODED AUDIO BY ADDING NOISE 审中-公开
标题翻译：通过添加噪声来改善解码音质的质量
公开(公告)号：WO2005001814A1
公开(公告)日：2005-01-06
申请号：PCT/IB2004/051010
申请日：2004-06-25
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , DEN BRINKER, Albertus, C. , MYBURG, François, P.
发明人： DEN BRINKER, Albertus, C. , MYBURG, François, P.
IPC分类号： G10L21/02
CPC分类号： G10L21/038
摘要： The present invention relates to a method of encoding and decoding an audio signal. The invention further relates to an arrangement for encoding and decoding an audio signal. The invention further relates to a computer-readable medium comprising a data record indicative of an audio signal and a device for communicating an audio signal having been encoded according to the present invention. By the method of encoding, a double description of the signal is obtained, where the encoding comprises two encoding steps, a first standard encoding and an additional second encoding. The second encoding is able to give a coarse description of the signal, such that a stochastic realization can be made and appropriate parts can be added to the decoded signal from the first decoding. The required description of the second encoder in order to make the realization of a stochastic signal possible requires a relatively low bit rate, while other double/multiple descriptions require a much higher bit rate.
摘要翻译：本发明涉及一种对音频信号进行编码和解码的方法。本发明还涉及用于对音频信号进行编码和解码的装置。本发明还涉及一种包括指示音频信号的数据记录的计算机可读介质和用于传送根据本发明已被编码的音频信号的设备。通过编码的方法，获得对信号的双重描述，其中编码包括两个编码步骤，第一标准编码和附加的第二编码。第二编码能够给出信号的粗略描述，使得可以进行随机实现，并且可以从第一解码将合适的部分添加到解码信号。为了实现随机信号，第二编码器的所需描述可能需要相对低的比特率，而其他双重/多重描述需要高得多的比特率。

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