A hybrid noise canceling structure with secondary path estimation

被引：0

作者：

Romero, Andres ^{[1
]}

Nakano-Miyatake, Mariko ^{[1
]}

Perez-Meana, Hector ^{[1
]}

机构：

[1] Natl Polytech Inst, Mech & Elect Engn Sch, Av Santa Ana 1000, Mexico City 04030, DF, Mexico

来源：

RECENT ADVANCES IN SYSTEMS, COMMUNICATIONS AND COMPUTERS | 2008年

关键词：

active noise canceling; secondary path estimation; feed-forward ANC; feedback ANC; FxLMS; hybrid structure; Erickson method; Bao method; Zhang method;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper proposes a hybrid active noise canceling (ANC) system to reduce the distortion produced by the acoustic feedback present in most feed-forward ANC systems. Proposed ANC system provides a solution of two important problems present in ANC systems the acoustic feedback and the secondary path estimation. The acoustic feedback is reduced by using two adaptive ANC, one with a feed-forward and the other one feedback configuration, respectively. For secondary path modeling modification of the on line methods proposed by Bao, Erickson and Zhang are used. Computer simulation results show that the combination of the Feedback and Feed-forward stages provides a fairly good acoustic feedback cancellation, while the secondary path estimation method performs fairly well, specially using the Zhang method, providing a fairly good noise cancellation performance.

引用

页码：194 / +

页数：3