Title:
ENCODING DEVICE AND ENCODING METHOD
Document Type and Number:
WIPO Patent Application WO/2011/086900
Kind Code:
A1
Abstract:
Disclosed are an encoding device and encoding method capable of improving the quality of a decoded signal under very low bit rate conditions using a small amount of computation. A spectrum correction unit (302) performs correction processing on the subspectrum in each subband in such a manner that samples equal to or greater than a subspectrum average value are left unchanged while samples smaller than the subspectrum average value are replaced by zero. As a result of this, it is possible to significantly reduce the number of bits required to quantize the subspectrums without substantial reduction in quality in a local search unit (303) and in a multi-rate indexing unit (304).
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Inventors:
YAMANASHI, Tomofumi (())
山梨智史 (())
山梨智史 (())
Application Number:
JP2011/000096
Publication Date:
July 21, 2011
Filing Date:
January 12, 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:
G10L19/02; H03M7/30
Attorney, Agent or Firm:
WASHIDA, Kimihito (8th Floor, Shinjuku First West Bldg.1-23-7, Nishi-Shinjuku, Shinjuku-k, Tokyo 23, 〒1600023, JP)
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Claims: