Targeted reproduction of interior sound field for mitigating negative acoustics effects based on nonlinear programming

IF 3.4 2区物理与天体物理 Q1 ACOUSTICS Applied Acoustics Pub Date : 2025-06-05 Epub Date: 2025-04-23 DOI:10.1016/j.apacoust.2025.110760

Xu Li , Xudong Wu , Jin Huang , Qitao Feng

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Abstract

To address the interior negative acoustic effects (NAEs) generated in vehicular sound cavities during acoustic modulation, this investigation proposes a targeted reproduction approach oriented towards the interior sound field based on nonlinear programming. For a given vehicular sound cavity, the sound source locations matching the acoustical transmission responses in vehicle environment is determined, and NAEs composed of scattering and reflection effects are interpreted and calculated. By the numerical equivalence of three reproductive challenges, the targeted sound field reproduction (SFR) based on nonlinear programming is formulated. Combined with the practical loudspeaker properties, the influence of NAEs on reproduced sound fields and its mitigation are analyzed. An experimental verification platform corresponding to vehicular sound cavity is constructed, so the different performances with the free fields and vehicle driving conditions are investigated, respectively. Simulation and measurement results both demonstrate that the proposed method not only achieves brilliant SFR performance, but also effectively achieves NAEs mitigation through targeted compensation mechanism. This research, starting from the acoustical characteristic of vehicular sound cavity and the equivalence calculation for interior NAEs, can provide technical support for high-quality acoustical performances in vehicle environment.

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基于非线性规划的室内声场定向再现以减轻负面声学效应

针对声调制过程中产生的车内负声效应，提出了一种基于非线性规划的车内声场定向再现方法。对于给定的车辆声腔，确定与车辆环境声传输响应相匹配的声源位置，并解释和计算由散射效应和反射效应组成的声源阻抗。通过三种再现挑战的数值等效，建立了基于非线性规划的目标声场再现（SFR）。结合扬声器的实际特性，分析了NAEs对重放声场的影响及其抑制措施。搭建了与车辆声腔相对应的实验验证平台，分别考察了声腔在自由场和车辆行驶条件下的不同性能。仿真和实测结果均表明，该方法不仅取得了优异的SFR性能，而且通过有针对性的补偿机制有效地实现了NAEs的缓解。本研究从车辆声腔的声学特性和车内声源等效计算出发，为高质量的车内环境声学性能提供技术支持。

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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.