GPU-based real-time beamforming for large arrays of optical wireless acoustic sensors

Acoustical Science and Technology

Hoang Duy Nguyen¹  Gabriel Pablo Nava¹  Yoshifumi Shiraki¹  Yutaka Kamamoto¹  Takehiro Moriya¹  Takashi G. Sato¹  Yusuke Hioka² 

[1] NTT Communication Science Laboratories, Nippon Telegraph and Telephone Corporation;Department of Mechanical Engineering, University of Auckland

关键词: Optical wireless sensors;    Broadband beamforming;    GPU computing;   

DOI  :  10.1250/ast.36.489

学科分类：声学和超声波

来源: Acoustical Society of Japan

【 摘 要 】

References(21)Recent optical wireless acoustic sensors have demonstrated the possibility to simultaneously sense massive numbers of audio channels in real time. Although this technology has enabled the deployment of large-scale applications, it raises new challenges from the computational perspective. In this regard, Graphics Processing Units provide significant parallel computational power. However, not all the existent algorithms are GPU-implementable in a straightforward way. This paper discusses signal processing schemes and implementation strategies to achieve real-time broadband beamforming using a single GPU card. The experiments introduced here, show our prototype implementation handling over 120 audio channels in real time. The experimental results further highlight the particular advantages of using a video camera-based approach to improve the beamforming performance.

【 授权许可】

Unknown