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Appl. Sci. 2018, 8(8), 1394; https://doi.org/10.3390/app8081394

A New Method for Active Cancellation of Engine Order Noise in a Passenger Car

Acoustics and Vibration Signal Processing Lab., Department of Mechanical Engineering, Inha University, Incheon 22201, Korea
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Received: 8 June 2018 / Revised: 3 August 2018 / Accepted: 14 August 2018 / Published: 17 August 2018
(This article belongs to the Special Issue Active and Passive Noise Control)
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Abstract

This paper presents a novel active noise cancellation (ANC) method to reduce the engine noise inside the cabin of a car. During the last three decades, many methods have been developed for the active control of a quasi-stationary narrowband sinusoidal signal. However, since the interior noise signal is non-stationary with a fast frequency variation when the car accelerates rapidly, these methods cannot stably reduce the interior noise. The proposed method can reduce the interior noise stably even if the speed of the car is changed quickly. The method uses an adaptive filter with an optimal weight vector for the active control of such an engine noise. The method of determining the optimal weight vector of an adaptive filter is demonstrated. In order to validate the advantages of the proposed method, a conventional method and the proposed method are simulated with three synthesized signals. Finally, the proposed method is applied to the cancellation of booming noise in a sport utility vehicle. We demonstrate that the performance of the ANC system with the proposed algorithm is excellent for the attenuation of engine noise inside the cabin of a car. View Full-Text
Keywords: adaptive filter; optimized filter; active noise cancellation; active sound design; sound quality; vehicle adaptive filter; optimized filter; active noise cancellation; active sound design; sound quality; vehicle
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Lee, S.-K.; Lee, S.; Back, J.; Shin, T. A New Method for Active Cancellation of Engine Order Noise in a Passenger Car. Appl. Sci. 2018, 8, 1394.

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