面向目标的定向声辐射技术及其应用研究

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 and its applications

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. In this paper, we review the principles and recent progresses of TARGET for the linear loudspeaker array and parametric acoustic array, respectively. The study of the TARGET is helpful for realizing the smart sound field control.