Shi Chuang, Kajikawa Yoshinobu
Department of Electrical and Electronic Engineering, Kansai University, 3-3-35 Yamatecho, Suita, Osaka Prefecture, 564-8680, Japan.
J Acoust Soc Am. 2015 Feb;137(2):777-84. doi: 10.1121/1.4906163.
This paper describes a method to compute the far-field directivity of a parametric loudspeaker array (PLA), whereby the steerable parametric loudspeaker can be implemented when phased array techniques are applied. The convolution of the product directivity and the Westervelt's directivity is suggested, substituting for the past practice of using the product directivity only. Computed directivity of a PLA using the proposed convolution model achieves significant improvement in agreement to measured directivity at a negligible computational cost.
本文描述了一种计算参数扬声器阵列（PLA）远场方向性的方法，通过应用相控阵技术可以实现可控参数扬声器。文中建议将乘积方向性与韦斯特维尔特方向性进行卷积，以取代以往仅使用乘积方向性的做法。使用所提出的卷积模型计算得到的PLA方向性，在计算成本可忽略不计的情况下，与测量方向性的一致性有显著提高。
