Application of adaptive filters to active noise control

被引：0

作者：

Pei, BN ^{[1
]}

Li, CG

机构：

[1] Xidian Univ, Key Lab Radar Signal Proc, Xian 710071, Peoples R China

[2] Beijing Inst Technol, Dept Automat Control, Beijing 100081, Peoples R China

来源：

CHINESE JOURNAL OF ELECTRONICS | 2001年 / 10卷 / 04期

关键词：

adaptive digital filters; active noise control; digital signal processor; environmental engineering;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A modified LMS algorithm for noise-control is suggested after a mathematical model of sound-cancellation is established, on the basis of the sound wave interference principle and the physical model of progressive waves in a duct. Its application in controlling noise with the frequency range from 100 to 800 Hz can be implemented by using the adaptive digital signal processing technique. The experiments on a pink noise, a broadband noise and a noise taken from a tank were made, which show that there exists an attenuation of 11 dB at the frequency of 500 Hz or so, and that the proposed adaptive noise control technique is very effective and valid.

引用

页码：548 / 551

页数：4