Advances in Acoustics and Vibration 
Volume 2008 (2008), Article ID 869130, 9 pages
doi:10.1155/2008/869130
Research Article

Integration of Bass Enhancement and Active Noise Control System in Automobile Cabin

Liang Wang,1 Woon Seng Gan,1 and Sen M. Kuo2

 1School of Electrical and Electronic Engineering, College of Engineering, Nanyang Technological University, Nanyang Avenue, 639798, Singapore
2Department of Electrical Engineering, Northern Illinois University, DeKalb, IL 60115, USA
Received 29 December 2007; Accepted 5 March 2008

Recommended by Marek Pawelczyk

Abstract

With the advancement of digital signal processing technologies, consumers are more concerned with the quality of multimedia entertainment in automobiles. In order to meet this demand, an audio enhancement system is needed to improve bass reproduction and cancel engine noise in the cabins. This paper presents an integrated active noise control system that is based on frequency-sampling filters to track and extract the bass information from the audio signal, and a multifrequency active noise equalizer to tune the low-frequency engine harmonics to enhance the bass reproduction. In the noise cancellation mode, a maximum of 3 dB bass enhancement can be achieved with significant noise suppression, while higher bass enhancement can be achieved in the bass enhance mode. The results show that the proposed system is effective for solving both the bass audio reproduction and the noise control problems in automobile cabins.