An investigation on the effect of acoustic feedback in a single-channel active noise control system

Author

Poshtan, J. ; Sadeghi, S. ; Kahaei, M.H.

Author_Institution

Fac. of Electr. Eng., Iran Univ. of Sci. & Technol., Tehran, Iran

Volume

1

fYear

2003

fDate

23-25 June 2003

Firstpage

430

Abstract

In this paper a single-channel feedforward ANC system has been primarily simulated in an experimental duct. Moreover, the robustness of the adaptive algorithm to modeling error has been emphasized by this simulation. In the implementation phase, acoustic feedback often caused instability, and the problem was overcome using a heuristic change in system setup. Finally, the FXLMS adaptive algorithm with feedback neutralization was implemented and the single tone acoustic noise could be attenuated 21 dB which was clearly recognizable for ear.

Keywords

active noise control; adaptive filters; feedback; feedforward; identification; stability; 21 dB; FXLMS adaptive algorithm; acoustic feedback; adaptive filters; feedback neutralization; robustness; secondary path modeling; single channel active noise control system; single channel feedforward system; single tone acoustic noise; system identification; Acoustic noise; Active noise reduction; Adaptive algorithm; Adaptive filters; Control systems; Ducts; Feedback; Frequency; Microphones; Signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Applications, 2003. CCA 2003. Proceedings of 2003 IEEE Conference on

Print_ISBN

0-7803-7729-X

Type

conf

DOI

10.1109/CCA.2003.1223432

Filename

1223432