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22. 发明公开

EP0924962A4 ENCODING METHOD AND DEVICE, DECODING METHOD AND DEVICE, AND RECORDING MEDIUM 失效
标题翻译： KODIERUNGSVERFAHREN UND VORRICHTUNG，DEKODIERUNGSVERFAHREN UND VORRICHTUNG，UND AUFZEICHNUNGSMEDIUM
公开(公告)号：EP0924962A4
公开(公告)日：2006-05-31
申请号：EP98912767
申请日：1998-04-10
申请人： SONY CORP
发明人： SHIMOYOSHI OSAMU , TSUTSUI KYOYA
IPC分类号： G10L19/00 , G11B20/10 , H04H1/00 , H04H40/72 , H04S1/00 , H04H5/00
CPC分类号： H04H20/88 , G10L19/008 , G11B20/10 , H04H40/72 , H04S1/007
摘要： A recording medium for recording a code string comprising: encoded signals of an A-channel, i.e. (L+R)/2, generated from L- and R-channels; encoded signals of a B-channel, i.e. either one of L- and R-channels or (L-R)/2; channel constitution data which are the information for selecting B-channel signals; and encoding parameters. The A-channel is used for such signals that can be reproduced with a reproducing device of an old standard type and the B-channel is used for such signals that can be reproduced with a reproducing device of a new standard type. The reproducing device of a new standard type can reproduce both A- and B-channel signals. Encoding and decoding which realize multichannel devices by expanding the new standard while making possible the reproduction with the reproducing device of an old standard type, wherein the deterioration of tone quality is reduced by minimizing the quantization noise produced by encoding.
摘要翻译：记录代码串，其包括从L和R通道的信号产生的（L + R）/ 2的通道A的编码信号，L和R通道的信号中的任一个的编码信号或通道B （LR）/ 2，作为信道B的信号的选择信息的信道构成数据，以及编码参数。信道A信号是可以由以前的标准适应性再现装置再现的信号，信道B信号是可由新的标准适应型再现装置再现的信号。新的标准适应性再现装置能够再现信道A和B的信号。因此，在通过根据新标准的扩展实现多信道的编码和解码中，同时能够由前标准适应性再现装置，通过编码产生的量化噪声被抑制到最小水平，从而降低声音质量。

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