Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Sound Quality Enhancement in MPEG Surround by Using ILD Distortion

ILD DISTORTION을 이용한 MPEG SURROUND의 음질 개선

  • Chon, Sang-Bae (Institute of New Media & Communications School of Electrical Engineering and Computer Science Seoul National University) ;
  • Choi, In-Yong (Institute of New Media & Communications School of Electrical Engineering and Computer Science Seoul National University) ;
  • Sung, Koeng-Mo (Institute of New Media & Communications School of Electrical Engineering and Computer Science Seoul National University)
  • 전상배 (서울대학교 공과대학 전기컴퓨터공학부 뉴미디어 통신공동연구소) ;
  • 최인용 (서울대학교 공과대학 전기컴퓨터공학부 뉴미디어 통신공동연구소) ;
  • 성굉모 (서울대학교 공과대학 전기컴퓨터공학부 뉴미디어 통신공동연구소)
  • Published : 2006.06.21
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Abstract

MPEG Surround is an audio coding technology that represents multi-channel audio signal with downmixed audio signal(s) and very low bitrate side information based on Binaural Cue Coding. The side information consists of Inter-Channel Level Difference, Inter-Channel Correlation, and payloads. These two parameters are correspondent to the well-known spatial parameters in psycho-acoustics, Inter-aural Level Difference (ILD) and Inter-Aural Cross Correlation (IACC). Though ICLD is to provide perceptually equivalent ILD to the listener, however, the ILD of the original multi-channel audio signal and that of the MPEG Surround encoded signal was different. The difference between two ILD values is defined as ILD Distortion (ILDD). This paper provides how ILDD can be applied to enhance sound quality in MPEG Surround and how much ILDD is decreased.

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