An active harmonic noise equalizer

Author

Ji, Min J. ; Kuo, Sen M.

Author_Institution

Dept. of Electr. Eng., Northern Illinois Univ., DeKalb, IL, USA

Volume

1

fYear

1993

fDate

27-30 April 1993

Firstpage

189

Abstract

The authors present an active harmonic noise equalizer (AHNE), which can either amplify or attenuate acoustic narrowband noise. The output of the AHNE system contains narrowband noise components the amplitudes of which can be linearly and arbitrarily controlled by adjusting the gain parameter of the equalizer, thus providing the desired noise shaping capability. Each single-frequency active noise equalizer (SFANE) consists of a sinusoidal reference input, a gain parameter, and two adaptive weights. A novel pseudo error minimum method is developed to use the least mean square algorithm effectively. The transfer function of the SFANE is presented and the behavior of the system is analyzed. Simulations were conducted to verify the effectiveness of the algorithm and the validity of the analysis.<>

Keywords

adaptive filters; equalisers; harmonics; least squares approximations; noise abatement; transfer functions; acoustic narrowband noise; active harmonic noise equalizer; adaptive weights; effectiveness; gain; least mean square algorithm; noise shaping; pseudo error minimum method; transfer function;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1993. ICASSP-93., 1993 IEEE International Conference on

Conference_Location

Minneapolis, MN, USA

ISSN

1520-6149

Print_ISBN

0-7803-7402-9

Type

conf

DOI

10.1109/ICASSP.1993.319087

Filename

319087