发明名称 |
ENCODING DEVICE, DECODING DEVICE, AND METHOD THEREOF |
摘要 |
<p>There is disclosed an encoding device capable of improving similarity between the high-band spectrum of the original signal and a new spectrum to be generated while realizing a low bit rate when encoding a wide-band signal spectrum. The encoding device has sub-band amplitude calculation units (122, 128) for calculating the amplitude of the respective sub-bands for the high-band spectrum obtained from the wide-band signal. A search unit (124) and a gain codebook (125) select some sub-bands from a plurality of sub-bands and only the gain of the selected sub-bands is subjected to encoding. An interpolation unit (126) expresses the gain of the sub-band not selected, by mutually interpolating the selected gains.</p> |
申请公布号 |
WO2005112001(A1) |
申请公布日期 |
2005.11.24 |
申请号 |
WO2005JP08963 |
申请日期 |
2005.05.17 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.;OSHIKIRI, MASAHIRO |
发明人 |
OSHIKIRI, MASAHIRO |
分类号 |
G10L19/00;G10L19/02;G10L21/02;H03M7/30;H04B1/66;(IPC1-7):G10L19/00 |
主分类号 |
G10L19/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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