A non-paraxial model for the audio sound behind a non-baffled parametric array loudspeaker

被引：10
|
作者：
Zhong, Jiaxin [1 ]
Kirby, Ray [1 ]
Qiu, Xiaojun [1 ]
机构：
[1] Univ Technol Sydney, Fac Engn & Informat Technol, Ctr Audio Acoust & Vibrat, Sydney, NSW 2007, Australia
来源：
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 2020年 / 147卷 / 03期
基金：
澳大利亚研究理事会;
关键词：
Audio acoustics;
D O I：
10.1121/10.0000793
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
It has been reported that audible sounds can be heard behind a parametric array loudspeaker in free field, which cannot be predicted by existing models. A non-paraxial model is developed in this paper for the finite size and disk-shaped parametric source based on quasilinear approximation and disk scattering theory. The sounds on both front and back sides are calculated numerically and compared with the existing non-paraxial model for the parametric source installed in an infinitely large baffle. Both simulation and experiment results show that audible sound exists on the back side. The mechanism of the phenomenon is explored.
引用
收藏
页码：1577 / 1580
页数：4
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