| 有源消声器消声的物理模型 |
| |
| 引用本文： | 姜根山,黄明强,赵玉屏.有源消声器消声的物理模型[J].华北电力大学学报,2000,27(1):68-72. |
| |
| 作者姓名： | 姜根山 黄明强 赵玉屏 |
| |
| 作者单位： | 华北电力大学基础科学系，河北保定 071003 |
| |
| 基金项目： | 华北电力大学校科研和教改项目，， |
| |
| 摘 要： | 利用声波相干理论，使噪声在控制区域内与次级声波发生干涉相消，来达到抑制或消除噪声的目的。根据有源消声原理，在实验室建立了一维管道有源降噪物理模型，最大消声指数可达２１ｄＢ，对工业应用有一定参考价值。
|
| 关 键 词： | 噪声 干涉相消 有源降噪 |
| 文章编号： | 1007-269l(2000)01-0068-05 |
| 修稿时间： | 1999年8月12日 |
Physical Model on Absorbing Sound of Active Sound Absorber |
| |
| JIANG Gen-shan,HUANG Ming-qiang,ZHAO Yu-ping.Physical Model on Absorbing Sound of Active Sound Absorber[J].Journal of North China Electric Power University,2000,27(1):68-72. |
| |
| Authors: | JIANG Gen-shan HUANG Ming-qiang ZHAO Yu-ping |
| |
| Abstract: | Active sound absorbers are more effective for canceling the low frequency noise in ducts. Based on the interference theory of sound waves, the noise in fixed region may be cancelled by the secondary source sys tem. A physical model of active sound absorber has been built in the laboratory, which cansists of an unidirec tional microphone, a time delay device and an unidirectional loudspeaker. This absorber can achieve an attenu ation of 10~21 dB for tone signal in the frequency range of 200~230 Hz. The work in this paper is useful for the industrial applications. |
| |
| Keywords: | noise interference cancelling active absorbing sound |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
