The Statistical Behavior of Phase Error for Deficient-Order Secondary Path Modeling

Author

Wu, Ming ; Qiu, Xiaojun ; Chen, Guoyue

Author_Institution

Nanjing Univ., Nanjing

Volume

15

fYear

2008

fDate

6/30/1905 12:00:00 AM

Firstpage

313

Lastpage

316

Abstract

When implementing active noise control (ANC) systems, the filtered-x LMS (FXLMS) algorithm is often used, where the secondary path transfer function between the output of the adaptive control filter and the error sensor has to be modeled. To model the secondary path precisely, the secondary path estimation filter should be of sufficient order. However, too large an order increases the computation load of the FXLMS algorithm. In this letter, the relationship between the modeling phase error and the order of the secondary path modeling filter is analyzed.

Keywords

active noise control; adaptive filters; least mean squares methods; statistical analysis; active noise control system; adaptive control filter; deficient-order secondary path modeling; filtered-x LMS algorithm; phase error statistical behavior; transfer function; Acoustic noise; Active noise reduction; Adaptive control; Adaptive filters; Control system synthesis; Error correction; Finite impulse response filter; Least squares approximation; Steady-state; Transfer functions; Active noise control; secondary path modeling;

fLanguage

English

Journal_Title

Signal Processing Letters, IEEE

Publisher

ieee

ISSN

1070-9908

Type

jour

DOI

10.1109/LSP.2007.914946

Filename

4456724