Active sound control by directional sources in the free field

被引：0

作者：

HOU Hong

WANG Chong

YANG Jianhua and SUN Jincai(Institute of acoustic engineering. Northwestern Polytechnical University. Xi’an 710072)

机构：

来源：

Chinese Journal of Acoustics | 1995年 / 04期

关键词：

Directivity; Complex strength; Radiation power;

D O I：

10.15949/j.cnki.0217-9776.1995.04.003

中图分类号：

O422 [声的传播];

学科分类号：

070206 ; 082403 ;

摘要：

In this paper, a general formula for calculating the complex strengths of secondary sources is derived from the minimization criterion of total acoustic power output when both of the primary and secondary sources are directional. Then specific properties of active sound attenuation are presented for some commonly used typical directional sources and the rule for distributing directional secondary sources is given.

引用

页码：307 / 316

页数：10