Abstract
Home sound environments are becoming increasingly important to the entertainment and audio industries. Compared with single zone soundfield reproduction, 3D spatial multizone soundfield reproduction is a more complex and challenging problem with few loudspeakers. In this paper, we introduce a simplification method based on the Least-Squares sound pressure matching method, and two separated zones can be reproduced accurately. For NHK 22.2 system, fourteen kinds of loudspeaker arrangements from 22 to 8 channels are derived. Simulation results demonstrate the favorable performance for two zones soundfield reproduction, and subjective evaluation results show the soundfield of two heads can be reproduced perfectly until 10 channels, and 8-channel systems can keep low distortions at ears. Compared with Ando’s multichannel conversion method by subjective evaluation, our proposed method is very close Ando’s in terms of sound localization in the center zone, what’s more, the performance of sound localization are improved significantly in the other zone of which position off the center.
The research was supported by National Nature Science Foundation of China(No. 61201169); National High Technology Research and Development Program of China (863 Program) No. 2015AA016306; National Nature Science Foundation of China (No. 61231015,No. 61201340); the Science and Technology Plan Projects of Shenzhen No. ZDSYS2014050916575763; the Fundamental Research Funds for the Central Universities(No. 2042015kf0206).
The research was supported by Science and Technology Foundation of Guizhou Province (No. LKS[2011]1).
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Fang, B., Wang, X., Wang, S., Hu, R., Yang, Y., Yang, C. (2015). Simplification of 3D Multichannel Sound System Based on Multizone Soundfield Reproduction. In: Ho, YS., Sang, J., Ro, Y., Kim, J., Wu, F. (eds) Advances in Multimedia Information Processing -- PCM 2015. PCM 2015. Lecture Notes in Computer Science(), vol 9314. Springer, Cham. https://doi.org/10.1007/978-3-319-24075-6_33
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DOI: https://doi.org/10.1007/978-3-319-24075-6_33
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