发明名称 |
SCALABLE DECODING APPARATUS |
摘要 |
A scalable decoding apparatus capable of providing decoded audio signals of high quality having less degradation of a high frequency spectrum even when decoding audio signals by generating the high frequency spectrum by use of a low frequency spectrum. In the apparatus, an amplitude adjusting part (1211) uses different adjustment coefficients in accordance with the characteristic of first layer spectrum information to adjust the amplitude of a first layer decoded signal spectrum, and then outputs the amplitude-adjusted first layer decoded signal spectrum to a pseudo-spectrum generating part (1012). Using amplitude-adjusted first layer decoded signal spectrum received from the amplitude adjusting part (1211), the pseudo-spectrum generating part (1012) generates and outputs a pseudo-spectrum of high frequencies to a scaling part (1013) . The scaling part (1013) scales the spectrum received from the pseudo-spectrum generating part (1012) and then outputs it to an adder (B). |
申请公布号 |
EP1808684(B1) |
申请公布日期 |
2014.07.30 |
申请号 |
EP20050805495 |
申请日期 |
2005.11.02 |
申请人 |
PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA |
发明人 |
EHARA, HIROYUKI;OSHIKIRI, MASAHIRO;YOSHIDA, KOJI |
分类号 |
G10L19/24;G10L21/02;G10L21/038 |
主分类号 |
G10L19/24 |
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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