A method to design compound sound sources for low-frequency local sound control in car cabins

IF 3.4 2区物理与天体物理 Q1 ACOUSTICS

Applied Acoustics Pub Date : 2025-09-23 DOI:10.1016/j.apacoust.2025.111091

Ruoyan Chen, Wandong Gu, Shuping Wang, Jiancheng Tao, Xiaojun Qiu

引用次数: 0

Abstract

Sound sources that offer high level of acoustic contrast between different seats are preferred for both local active noise control and independent sound zoning in automotive cabins. In this paper, the acoustic contrast performance of 2 traditional closed-box loudspeakers at the front passenger’s headrest is analyzed in a car based on measured acoustic transfer functions. Compound sound sources each of which utilizing two loudspeakers and an analog circuit are proposed to replace the traditional closed-box loudspeakers to improve the acoustic contrast at low frequencies. Simulation results show that the averaged overall sound pressure level at the rear seats and the driver’s seat can be depressed by 4.7 dB and 2.8 dB, respectively, within the 3 octave bands centered at 125 Hz, 250 Hz and 500 Hz, while that at the front passenger’s seat is maintained. Finally, prototypes of the compound sound sources are made and experiments are conducted to validate the simulation results.

查看原文本刊更多论文

汽车舱室低频局部声控制复合声源设计方法

在汽车客舱中，对于局部主动噪声控制和独立声音分区来说，在不同座位之间提供高水平声学对比的声源是首选。本文基于实测的声学传递函数，分析了某汽车前排乘客头枕处2个传统闭箱扬声器的声学对比性能。提出了利用两个扬声器和一个模拟电路的复合声源来取代传统的闭箱扬声器，以提高低频的声学对比度。仿真结果表明，在以125 Hz、250 Hz和500 Hz为中心的3个八度频带内，后排和驾驶座的平均总声压级可分别降低4.7 dB和2.8 dB，而前排座位的平均总声压级保持不变。最后，制作了复合声源样机，并进行了实验验证。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.