Title:
DEVICE AND METHOD FOR PARAMETRIC MULTICHANNEL DECODING WITH LOW OPERATION AMOUNT
Document Type and Number:
Japanese Patent JP2006337767
Kind Code:
A
Abstract:
To solve the problem that an operation amount and memory capacity increase as data are processed in a complex number region since conventional parametric stereo coding based upon MPEG-4 Audio Extension 2 uses a complex value filter bank.
A parametric multichannel decoding device according to the present invention employs real-number values as at least one or more of filter coefficients that an analyzing filter, an all-pass filter, and a synthesizing filter use to greatly reduce the operation amount and memory capacity.
Inventors:
TAKAGI YOSHIAKI
CHONG KOK SENG
REO WEI RIN
NEO SUA HONG
MIYASAKA SHUJI
KAWAMURA AKIHISA
NORIMATSU TAKESHI
TANAKA NAOYA
TSUSHIMA MINEO
CHONG KOK SENG
REO WEI RIN
NEO SUA HONG
MIYASAKA SHUJI
KAWAMURA AKIHISA
NORIMATSU TAKESHI
TANAKA NAOYA
TSUSHIMA MINEO
Application Number:
JP2005163125A
Publication Date:
December 14, 2006
Filing Date:
June 02, 2005
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G10L19/02; H03M7/30
Attorney, Agent or Firm:
Gunichiro Ariga