Beamwidth Control in Parametric Acoustic Array

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概要

• 論文の詳細を見る

• Directional sound can be generated by amplitude-modulating the ultrasound carrier wave with an audio signal and then transmitting it from an array system. On the basis of the analysis of its radiation pattern, an algorithm using delay-and-sum beamforming is proposed to control the beamwidth and sidelobe of demodulated audible sound. Simulation results show that enhanced performance in terms of sidelobe level can be achieved by using the Chebyshev weighting function, compared with the beamforming algorithm without shading.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2005-09-15

著者

• Gan Woon-seng

  School Of Eee Nanyang Technological University

• Yang Jun

  School Of Eee Nanyang Technological University

• Tan Khim-Sia

  School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798

• Er Meng-Hwa

  School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798

• Yan Yong-Hong

  Institute of Acoustics, Chinese Academy of Sciences, Beijing, 100080, China

• Gan Woon-Seng

  School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798

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