The Journal of the Acoustical Society of Korea

The Acoustical Society of Korea (한국음향학회)
권호 표지

Optimized Ambisonic Panning Algorithm Using Directional Psychoacoustic Criteria

방향심리인자를 이용한 최적 앰비소닉 패닝기법

  • Lee, Sin-Lyul (School of Electrical Engineering and Computer Science, Seoul National University) ;
  • Lee, Seung-Rae (School of Electrical Engineering and Computer Science, Seoul National University) ;
  • Sung, Koeng-Mo (School of Electrical Engineering and Computer Science, Seoul National University)
  • Published : 2006.03.31
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, an Optimized Ambisonic Panning Algorithm (OAPA) which reduces sound localization error, is proposed. In the conventional Ambisonic Panning Algorithm (APA), sound localization is usually different from the panning angle, especially when listeners are not in an ideal listening position, because of low signal separation among other channels. To overcome this problem, an OAPA using window functions is proposed. A proper window function can be verified, comprising of higher harmonic components than 2M+1 and improved DPC and channel separation. Analysis results demonstrate that the proposed method results in higher signal separation among other channels and lower sound localization errors than the conventional APA.

Keywords

References

  1. S.-L. Lee, Optimized multi-channel panning algorithm using directional psychoacoustic criteria and head related transfer function, (Ph.D. thesis, Seoul National University, 2005)
  2. H. D. Harwood, Stereophonic image sharpness, (Wireless World, 74, 207-211, 1968)
  3. C. Avendano, V. R. Algazi and R. O. Duda, 'A head and torso model for low-frequency binaural elevation effects' , Proc .1999 IEEE Workshop on Application of Signal Processing to Audio and Acoustics, New Paltz, New York, Oct. 17 (20) 1999
  4. M. A. Gerzon, 'Panpot laws for multispeaker stereo' , 92nd Convention of the Audio Engineering Society, J. Audio Eng. Soc ., preprint 3309. 1992
  5. M. A. Gerzon, 'Psychoacoustic decoders for multispeaker stereo and surround sound', 93rd Convention of the Audio Engineering Society. J. Audio Eng. Soc ., preprint 3406, 1992
  6. M. A. Garzon, 'General metatheory of auditory localization', 92nd Convention of the Audio Engineering Society, J. Audio Eng. soc., preprint 3306, 1992
  7. J. S. Bamford, An analysis of Ambisonics of first and second order, (M.Sc. thesis, University of Waterloo, Waterloo, Ont., Canada, 1995)
  8. J. Daniel. J.-B. Rault and J.-D. Polack 'Ambisonics encoding of other formats for multiple listening conditions' , 105th Convention of the Audio Engineering Society, preprint 4795, 1998
  9. U. Horbach 'New techniques for the production of multichannel sound' , 103rd Convention of the Audio Engineering Society, preprint 4624, 1997
  10. J. S. Bamford and J. Vanderkoov. 'Ambisonic Sound for us' . 99th Convention of the Audio Engineering Society, preprint 4138, 1995