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    • 9. 发明专利
    • Encoding apparatus, decoding apparatus and these methods
    • JP5448850B2
    • 2014-03-19
    • JP2009550480
    • 2009-01-23
    • パナソニック株式会社
    • 智史 山梨正浩 押切
    • G10L19/16G10L19/02G10L19/24G10L21/0388H03M7/30
    • G10L19/0204G10L19/24G10L21/038
    • 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.