Immersive audio system based on 2.5D local sound field synthesis using high-speed 1-bit signal

Kakeru Kurokawa; Yusuke Ikeda; Naotoshi Osaka; Yasuhiro Oikawa

doi:10.1117/12.2591022

13 March 2021 Immersive audio system based on 2.5D local sound field synthesis using high-speed 1-bit signal

Kakeru Kurokawa, Yusuke Ikeda, Naotoshi Osaka, Yasuhiro Oikawa

Proceedings Volume 11766, International Workshop on Advanced Imaging Technology (IWAIT) 2021; 117661J (2021) https://doi.org/10.1117/12.2591022
Event: International Workshop on Advanced Imaging Technology 2021 (IWAIT 2021), 2021, Online Only

Abstract

To a achieve highly immersive auditory experience, physically accurate sound field reproduction is required. Many local sound field synthesis (SFS) methods have been proposed to accurately reproduce the sound field around a listener. However, the narrow listening area in local SFS prevents the listener from moving freely. In this study, we developed a dynamic 2.5-dimensional local SFS system, which moves the listening area to follow the movements of the listener using a body-tracking camera. For the evaluation the proposed system, the azimuth localization accuracy was investigated by measuring interaural level differences in an anechoic chamber. The results show that when the distance between the listener and the virtual point source is 1.0 m, the proposed system has a small azimuthal localization error compared with conventional SFS.

Citation Download Citation

Kakeru Kurokawa, Yusuke Ikeda, Naotoshi Osaka, and Yasuhiro Oikawa "Immersive audio system based on 2.5D local sound field synthesis using high-speed 1-bit signal", Proc. SPIE 11766, International Workshop on Advanced Imaging Technology (IWAIT) 2021, 117661J (13 March 2021); https://doi.org/10.1117/12.2591022

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