(19)
(11) EP 2 051 245 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.07.2013 Bulletin 2013/28

(43) Date of publication A2:
22.04.2009 Bulletin 2009/17

(21) Application number: 08105551.9

(22) Date of filing: 10.10.2008
(51) International Patent Classification (IPC): 
G10L 21/02(2013.01)
 G10L 19/24(2013.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 17.10.2007 WO PCT/KR2007/104402

(71) Applicant: Gwangju Institute of Science and Technology
Buk-gu, Gwangju 500-712 (KR)

(72) Inventors:
  • KIM, Hong Kook
    500-712, Buk-gu, Gwangju (KR)
  • LEE, Young Han
    500-712, Buk-gu, Gwangju (KR)

(74) Representative: Capasso, Olga et al
De Simone & Partners S.p.A. Via Vincenzo Bellini, 20
00198 Roma
00198 Roma (IT)

   


(54) Wideband audio signal coding/decoding device and method


(57) Disclosed is a wideband audio signal coding/decoding device and method that may code a wideband audio signal while maintaining a low bit rate.
The wideband audio signal coding device includes an enhancement layer (200) that extracts a first spectrum parameter from an inputted wideband signal having a first bandwidth, quantizes the extracted first spectrum parameter, and converts the extracted first spectrum parameter into a second spectrum parameter; and a coding unit (130) that extracts a narrowband signal from the inputted wideband signal and codes the narrowband signal based on the second spectrum parameter provided from the enhancement layer, wherein the narrowband signal has a second bandwidth smaller than the first bandwidth.
The wideband audio signal coding/decoding device and method may code a wideband audio signal while maintaining a low bit rate.







Search report






Search report