发明名称 |
ENCODING DEVICE, DECODING DEVICE, AND METHOD THEREOF |
摘要 |
Provided is an encoding device which divides an input signal into a low-range component and a high-range component and encodes the components in separate encoding units. The encoding device can improve quality of a decoded signal. The encoding device (101) includes: a band division process unit (201) which subjects an input signal to a band division process so as to obtain a lower intermediate-range component lower than a first frequency and a high-range component higher than the first frequency; a low-range encoding unit (202) which suppresses a portion of the lower intermediate-range component higher than a second frequency so as to obtain a low-range component and encodes the low-range component so as to obtain low-range encoded information; an intermediate-range correction unit (203) corrects the intermediate-range component higher than the second frequency among the suppressed lower intermediate-range component so as to obtain a corrected intermediate-range component; an intermediate high-range encoding unit (204) which encodes the corrected intermediate-range component and the high-range component so as to obtain intermediate high-range encoded information; and a multiplexing unit (205) which multiplexes the low-range encoded information and the intermediate high-range encoded information so as to obtain encoded information. |
申请公布号 |
WO2009093466(A1) |
申请公布日期 |
2009.07.30 |
申请号 |
WO2009JP00262 |
申请日期 |
2009.01.23 |
申请人 |
PANASONIC CORPORATION;YAMANASHI, TOMOFUMI;OSHIKIRI, MASAHIRO |
发明人 |
YAMANASHI, TOMOFUMI;OSHIKIRI, MASAHIRO |
分类号 |
G10L19/14;G10L19/00;G10L19/02;G10L19/24 |
主分类号 |
G10L19/14 |
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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