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An Audio Coding Technique Employing the Inter-channel Phase Difference Skip
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  • Journal title : Journal of Broadcast Engineering
  • Volume 21, Issue 3,  2016, pp.369-379
  • Publisher : The Korean Institute of Broadcast and Media Engineers
  • DOI : 10.5909/JBE.2016.21.3.369
 Title & Authors
An Audio Coding Technique Employing the Inter-channel Phase Difference Skip
Kim, Hyun-Hwi; Kim, Rin-Chul;
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 Abstract
This paper deals with an efficient method for skipping inter-channel phase differences (IPD) in the MPEG surround of the unified speech and audio coding (USAC). Based on the psycho-acoustic sensitivity on the IPD, we estimate a threshold on IPD, below which we can not notice degradation in spatial cue. We propose an IPD skip method, in which any IPDs within the threshold are set to zero and are not transmitted. The proposed IPD skip method gives about 38% savings in terms of bit amount for IPD. Nevertheless, in the MUSHRA test, the proposed method does not show any noticeable degradation in the decoded audio quality.
 Keywords
MPEG Surround(MPS);Unified speech and audio coding(USAC);Inter-channel phase difference(IPD);Overall phase difference(OPD);
 Language
Korean
 Cited by
 References
1.
ISO/IEC 23003-1 : Information technology - MPEG audio technologies -Part 1 : MPEG Surround, 2006.

2.
ISO/IEC 23003-3 : Information technology - MPEG audio technologies -Part 3 : Unified speech and audio coding, 2011.

3.
C. Faller and F. Baumgarte, “Binaural cue coding –part I : psychoacoustic fundamentals and design principles,” IEEE Trans. On Speech and Audio Proc., vol. 11, no. 6, pp. 509-519, 2003. crossref(new window)

4.
J. Breebaart, G. Hotho, J. Koppens, E. Schuijers, W. Oomen, and S. van de Par, “Background, concept, and architecture for recent MPEG surround standard on multichannel audio compression,” J. Audio Eng. Soc. Vol. 55, no. 5, pp. 331-351, 2007.

5.
J. Kim, E. Oh, and J. Robilliard, "Enhanced stereo coding with phase parameters for MPEG unified speech and audio coding," AES 127th Convention, paper no. 7875, 2009.

6.
J. Breebaart, S. van de Par, A. Kohlrausch, and E. Schuijers, “Parametric coding of stereo audio,” EURASIP J. Appl. Signal Process., vol. 9, pp. 1305-1322, 2004.

7.
B. Rakerd and W. Hartmann, “Localization of sound in room. V. Binaural coherence and human sensitivity to interaural time differences in noise,” J. Acoust. Soc. Am. Vol. 128, no. 5, pp. 3052-3063, 2010. crossref(new window)

8.
McFadden D., Jeffress L. A., and Lakey J. R, “Differences in interaural phase and level in detection and lateralization : 1000 and 2000 Hz,” J. Acoust. Soc. Am. 52, 1197-1206, 1972. crossref(new window)

9.
ITU-R BS.1534-1, Method for the subjective assessment of intermediate sound quality(MUSHRA), 2011.