Title:
STEREO AUDIO ENCODING DEVICE, STEREO AUDIO DECODING DEVICE, AND METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2008/016098
Kind Code:
A1
Abstract:
Disclosed is a stereo audio encoding device capable of reducing a bit rate. In this
device, a stereo audio encoding unit (103) performs LPC analysis on an L channel signal
and an R channel signal so as to obtain an L channel LPC coefficient and an R channel
LPC coefficient. An LPC coefficient adaptive filter (105) obtains an LPC coefficient
adaptive filter parameter to minimize the mean square error between the L channel
LPC coefficient and the R channel LPC coefficient. An LPC coefficient reconfiguration
unit (106) reconfigures the R channel LPC coefficient by using the L channel LPC
coefficient and the LPC coefficient adaptive filter parameter. A route calculation
unit (107) calculates a polynomial route indicating the safety of the R channel
reconfigured LPC coefficient. A selection unit (108) selects and outputs the
LPC coefficient adaptive filter parameter or the R channel LPC coefficient according
to the safety of the R channel reconfigured LPC coefficient.
Inventors:
ZHOU, Jiong (())
チョウ ジオン (())
NEO, Sua Hong (())
ネオ スア ホン (())
チョウ ジオン (())
NEO, Sua Hong (())
ネオ スア ホン (())
Application Number:
JP2007/065133
Publication Date:
February 07, 2008
Filing Date:
August 02, 2007
Export Citation:
Assignee:
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1006, Oaza Kadoma Kadoma-sh, Osaka 01, 5718501, JP)
松下電器産業株式会社 (〒01 大阪府門真市大字門真１００６番地 Osaka, 5718501, JP)
ZHOU, Jiong (())
チョウ ジオン (())
NEO, Sua Hong (())
松下電器産業株式会社 (〒01 大阪府門真市大字門真１００６番地 Osaka, 5718501, JP)
ZHOU, Jiong (())
チョウ ジオン (())
NEO, Sua Hong (())
International Classes:
G10L19/00; G10L19/06; G10L19/14; H03M7/30; G10L19/00; H03M7/30
Attorney, Agent or Firm:
WASHIDA, Kimihito (5th Floor, Shintoshicenter Bldg.24-1, Tsurumaki 1-chom, Tama-shi Tokyo 34, 2060034, JP)
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