Active attenuation of acoustic noise using adaptive algorithms

Author

Alvarez, A.M. ; Leitch, R.R.

Author_Institution

Dept. of Res. & Dev. Telindus NV Leuven, Belgium

fYear

1988

fDate

7-9 June 1988

Firstpage

511

Abstract

The authors consider the general conditions for phase cancellation of broadband acoustic noise emanating from compact sources. From this, the characteristics, geometry, and requirements to obtain complete cancellation of signals were obtained. By making use of these relationships to analyze an active noise-control system, an expression for the required controller was obtained. Several frequency-domain adaptive filter designs were developed. Comparative computer simulations of these filters were given and revealed interesting points concerning the different structures. Finally, the real-time implementation to a synthetic source was examined, and the performance using variable single tones and broadband signals was investigated. The performance was further investigated by application to the attenuation of the exhaust noise of a 100-cm/sup 3/ motorcycle.<>

Keywords

acoustic noise; adaptive filters; noise abatement; acoustic noise; active noise-control system; adaptive algorithms; broadband signals; exhaust noise; frequency-domain adaptive filter designs; motorcycle; phase cancellation; real-time implementation; variable single tones; Acoustic noise; Active noise reduction; Adaptive algorithm; Adaptive filters; Attenuation; Computer simulation; Control systems; Frequency domain analysis; Geometry; Noise cancellation;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1988., IEEE International Symposium on

Conference_Location

Espoo, Finland

Type

conf

DOI

10.1109/ISCAS.1988.14976

Filename

14976