Feedback control of car cabin noise using sound field compensation

IF 3.4 2区物理与天体物理 Q1 ACOUSTICS Applied Acoustics Pub Date : 2025-02-25 DOI:10.1016/j.apacoust.2025.110613

Li Shi, Hongyu Chen, Haishan Zou, Kai Chen, Shuping Wang, Xiaojun Qiu

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Abstract

In this paper, feedback control is adopted to reduce the noise around two ears of a person in a seat in a car with an active noise control headrest system which has two microphones and two loudspeakers installed on the headrest. For each ear side, the microphone is closer to the loudspeaker than the ear and has a short latency in the secondary path, so it is used for feedback control. The target signal for the control is generated by compensating the microphone signal with the spatial property between the microphone and ear positions. Then a servo control system consisting of the secondary source and microphone is employed to follow the target signal, and noise reduction at the ear position is realized when the difference between the target signal and output of the servo control system is minimized. The noise reduction at the ear position obtained with this compensated target control signal (referred to as the compensation control) is compared with that from applying feedback control directly to the microphone (referred to as the direct control). Both simulation results using recorded road noise in an electric car cabin and the real-time experiment results on road are presented to demonstrate that the compensation control can achieve higher noise reduction than the direct control at the ear positions.

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基于声场补偿的汽车舱室噪声反馈控制

本文采用主动噪声控制头枕系统，在头枕上安装了两个麦克风和两个扬声器，采用反馈控制的方法来降低汽车座位上的人两耳周围的噪声。对于每个耳侧，麦克风比耳朵更靠近扬声器，并且在次要路径上具有较短的延迟，因此用于反馈控制。控制的目标信号是通过用麦克风和耳朵位置之间的空间特性补偿麦克风信号来产生的。然后利用二次源和传声器组成的伺服控制系统跟踪目标信号，在目标信号与伺服控制系统输出差最小的情况下实现耳位降噪。将这种补偿后的目标控制信号（称为补偿控制）与直接对麦克风施加反馈控制（称为直接控制）所获得的耳位降噪进行比较。仿真结果表明，补偿控制比直接控制在耳位处的降噪效果更好。

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来源期刊

Applied Acoustics 物理-声学

CiteScore

7.40

自引率

11.80%

发文量

618

审稿时长

7.5 months

期刊介绍： Since its launch in 1968, Applied Acoustics has been publishing high quality research papers providing state-of-the-art coverage of research findings for engineers and scientists involved in applications of acoustics in the widest sense. Applied Acoustics looks not only at recent developments in the understanding of acoustics but also at ways of exploiting that understanding. The Journal aims to encourage the exchange of practical experience through publication and in so doing creates a fund of technological information that can be used for solving related problems. The presentation of information in graphical or tabular form is especially encouraged. If a report of a mathematical development is a necessary part of a paper it is important to ensure that it is there only as an integral part of a practical solution to a problem and is supported by data. Applied Acoustics encourages the exchange of practical experience in the following ways: • Complete Papers • Short Technical Notes • Review Articles; and thereby provides a wealth of technological information that can be used to solve related problems. Manuscripts that address all fields of applications of acoustics ranging from medicine and NDT to the environment and buildings are welcome.