Title:
DEVICE AND METHOD FOR EFFICIENTLY ENCODING QUANTIZATION PARAMETERS OF SPECTRAL COEFFICIENT CODING
Document Type and Number:
WIPO Patent Application WO/2012/004998
Kind Code:
A1
Abstract:
Disclosed are a device and a method for efficiently encoding the quantization parameters of split multirate lattice vector quantization. By means of performing spectral analysis of a split multirate vector quantized spectrum, the abovementioned spectrum is divided into a null-vector region and a non-null-vector region. Regarding the null-vector region, instead of transmitting a series of indicated values of each null vector, the indicated values of the null-vector region and quantized values of the index (or the number of null vectors in the null vector region) of the concluding vector in the null vector region are transmitted. The indicated values of the null vector region can be set in a variety of ways, with the only necessary condition being that the indicated values be identifiable at a decoder. The final index or number of null vectors can be quantized by means of an adaptively designed codebook. By means of applying the disclosed method, a number of bits can be reduced from the codebook indicated values.
Inventors:
LIU, Zongxian (())
リウ ゾンシアン (())
リウ ゾンシアン (())
Application Number:
JP2011/003884
Publication Date:
January 12, 2012
Filing Date:
July 06, 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)
LIU, Zongxian (())
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)
LIU, Zongxian (())
International Classes:
G10L19/02; G10L19/08; G10L19/14
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: