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面向目标的定向声辐射技术及其应用研究 被引量:2

Target-oriented acoustic radiation generation technique and its applications
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摘要 面向目标的定向声辐射是指利用声源特性和阵列信号处理技术,将声波传送至目标方向或区域的声场控制方法。本文介绍了定向声辐射技术的原理和进展,重点阐述了普通扬声器阵列和参量阵扬声器这两种声源形式的理论、算法和应用研究。其中,针对扬声器阵列,主要分析了基于声能量对比度控制的声聚焦技术;针对参量阵扬声器,综述了利用非线性效应产生高指向性可听声的计算方法、信号预处理和应用等进展。面向目标的定向声辐射技术的研究对实现智能声场控制有着重要意义。 Target-oriented Acoustic Radiation Generation Technique (TARGET) utilizes the array signal processing to transmit the audible sound wave to the targeted direction or predefined region by a transducer array, which is one of the sound-field control techniques. This paper reviews the principles and recent progresses of TARGET for the linear loudspeaker array and parametric acoustic array, respectively. The sound energy in the target region based on linear loudspeaker array is analyzed. The calculation method of sound field, signal pre-processing and applications of parametric acoustic array is presented as well. The study of the TARGET is helpful for realizing the smart sound field control.
出处 《应用声学》 CSCD 北大核心 2013年第4期277-289,共13页 Journal of Applied Acoustics
关键词 面向目标 定向声 声能量对比度控制 参量阵扬声器 Target-oriented, Directional sound, Acoustic contrast control, Parametric acoustic array
作者简介 杨军(1968-),男,安徽安庆人,研究员,研究方向:声学信号处理,声场控制。通讯作者:杨军,E-mail:jyang@mail.ioa.ac.cn 叶超(1984-),男,博士后。 姬培锋(1980-),男,副研究员。 蔡野锋(1987-),男,博士研究生。 田静(1960-),男,研究员。
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