Title :
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
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;
Conference_Titel :
Control Applications, 2003. CCA 2003. Proceedings of 2003 IEEE Conference on
Print_ISBN :
0-7803-7729-X
DOI :
10.1109/CCA.2003.1223432
