发明名称 |
ENCODER, DECODER, AND METHOD THEREFOR |
摘要 |
<p>Provided is an encoder which can effectively encode/decode spectrum data of a broad frequency signal in a high frequency range, can dramatically reduce the number of the arithmetic operations to be performed, and can improve the quality of the decoded signal. The encoder comprises a first layer coding unit (202) which encodes an input signal in a low frequency range below a predetermined frequency to generate first coded information, a first layer decoding unit (203) which decodes the first coded information to generate a decoded signal, and a second layer coding unit (206) which splits the input signal in a high frequency range above a predetermined frequency, into a plurality of sub-bands, presumes the respective sub-bands from the input signal or decoded signal, partially selects a spectrum component within each sub-band, and calculates an amplitude adjustment parameter used to adjust the amplitude of the selected spectrum component to thereby generate second coding information.</p> |
申请公布号 |
WO2010098112(A1) |
申请公布日期 |
2010.09.02 |
申请号 |
WO2010JP01289 |
申请日期 |
2010.02.25 |
申请人 |
PANASONIC CORPORATION;YAMANASHI, TOMOFUMI;OSHIKIRI, MASAHIRO;EHARA, HIROYUKI |
发明人 |
YAMANASHI, TOMOFUMI;OSHIKIRI, MASAHIRO;EHARA, HIROYUKI |
分类号 |
G10L19/02;G10L21/038;G10L21/04 |
主分类号 |
G10L19/02 |
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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