Title:
DECODING DEVICE, ENCODING DEVICE, AND METHODS FOR SAME
Document Type and Number:
WIPO Patent Application WO/2011/161886
Kind Code:
A1
Abstract:
Disclosed is a decoding device which can efficiently encode/decode spectral data in a high pass section of a broadband signal, can achieve a substantial reduction in the amount of processing computations, and can improve the quality of a decoded signal. In the disclosed device: a sample group extraction unit (372) partially selects spectral components by means of an ease of selection importance which is the extent that the spectral components come close to the spectral component having the maximum amplitude value, in the spectrum of a high pass estimated by means of first amplitude adjustment parameters contained in second encoded information and bands most approximated to each of the spectrums of a plurality of sub-bands calculated from the spectrum of a second decode signal; a logarithmic gain application unit (373) applies second amplitude adjustment parameters to the partially selected spectral components; and an interpolation processing unit (374) applies third amplitude adjustment parameters which are adaptively set according to the value of the second amplification adjustment parameters, to the spectral components which were not partially selected.
Inventors:
YAMANASHI, Tomofumi (())
山梨 智史 (())
山梨 智史 (())
Application Number:
JP2011/003196
Publication Date:
December 29, 2011
Filing Date:
June 07, 2011
Export Citation:
Assignee:
PANASONIC CORPORATION (1006, Oaza Kadoma Kadoma-sh, Osaka 01, 〒5718501, JP)
パナソニック株式会社 (〒01 大阪府門真市大字門真１００６番地 Osaka, 〒5718501, JP)
YAMANASHI, Tomofumi (())
パナソニック株式会社 (〒01 大阪府門真市大字門真１００６番地 Osaka, 〒5718501, JP)
YAMANASHI, Tomofumi (())
International Classes:
G10L21/04
Attorney, Agent or Firm:
WASHIDA, Kimihito (8th Floor, Shinjuku First West Bldg.1-23-7, Nishi-Shinjuku, Shinjuku-ku, Tokyo 23, 〒1600023, JP)
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