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An improved 5-2 channel downmix algorithm for 3D audio reproduction

  • Xingwei Sun
  • Risheng Xia
  • Lei Yang
  • Lizhong Wang
  • Junfeng Li
Conference paper
Part of the Smart Innovation, Systems and Technologies book series (SIST, volume 63)

Abstract

With the continuous development of virtual reality (VR), 3D audio is widely used particularly for headphones. Therefore, a multi-channel to two-channel downmixing approach is in great demand. Many traditional methods have been proposed, but these methods cannot meet the requirements for higher perceptual quality in VR scenes. In this paper, we propose an improved five-two channel downmixing approach based on coherence suppression and spatial correction. This method can reduce the timbre change and spatial inaccuracy problems which traditional method commonly encountered. Its effectiveness is validated through the preliminary experiments.

Keywords

Virtual reality 3D audio Downmix 

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References

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    Kuba Lopatka, et al.: Novel 5.1 downmix algorithm with improved dialogue intelligibility. Audio Engineering Society. (2013)Google Scholar
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    Digital Audio Compression Standard (AC-3,E-AC-3).(2010)Google Scholar
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    C. Faller and P. Schillebeeckx: Improved ITU and Matrix Surround Downmixing. Audio Engineering Society. (2011)Google Scholar
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    A. Adami, et al.: Down-Mixing Using Coherence Suppression. IEEE International Conference on Acoustic, Speech and Signal Processing. (2014)Google Scholar

Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Xingwei Sun
    • 1
  • Risheng Xia
    • 1
  • Lei Yang
    • 2
  • Lizhong Wang
    • 2
  • Junfeng Li
    • 1
  1. 1.Institute of AcousticsChinese Academy of SciencesBeijingChina
  2. 2.Samsung R&D Institute China-Beijing (SRC-B)BeijingChina

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