Auralisation of train pass-bys for virtual reality demonstration of combined noise mitigation measures

IF 3.4 2区物理与天体物理 Q1 ACOUSTICS

Applied Acoustics Pub Date : 2025-09-18 DOI:10.1016/j.apacoust.2025.111063

Reto Pieren , Fotis Georgiou , Giacomo Squicciarini , David J. Thompson

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引用次数: 0

Abstract

Railway noise can be reduced by various mitigation measures and combinations thereof. However, it is difficult to assess their combined effects and to communicate the options to stakeholders. For this, auralisation is a promising technique that can support communication and decision-making, and enable psychoacoustic evaluations. This paper presents a new physics-based auralisation model for train pass-bys that considers combined mitigation measures. The measures include acoustic rail grinding, avoidance of wheel flats, wheel and rail dampers, rail shields, mini barriers and classical noise barriers. Pass-by parameters such as train type, speed, track design and observer location can be selected. The proposed model includes contributions from rolling noise, impact noise, traction, auxiliary systems, and aerodynamic noise. The main novelty of this work lies in the improved time-domain synthesis of rolling noise. The sound radiated by each wheelset is modelled by multiple moving point sources. For the sound radiated by the track, a new hybrid model is proposed that consists of a combination of moving and fixed equivalent sources, reflecting the structural wave propagation in the rails. Separate source contributions for radial and axial wheel vibration, vertical and lateral rail vibration and sleeper vibration are considered using TWINS-based computations and an improved description of rolling damping. First comparisons of synthesised and recorded train pass-bys showed a very good agreement and a high degree of realism. The auralisations were coupled to an immersive virtual reality environment that allows for an interactive audio-visual experience of different train pass-by scenarios and to demonstrate noise mitigation options. The presented models were implemented in two software tools that are described in this paper and made available. The tools have already been successfully used in public demonstrations at international exhibitions and information events for residents.

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列车过路通道的听觉化，以作综合降噪措施的虚拟实境示范

铁路噪音可透过各种纾缓措施及这些措施的组合来减低。然而，很难评估它们的综合影响，也很难将这些选择传达给利益相关者。因此，听觉化是一种很有前途的技术，可以支持沟通和决策，并使心理声学评估成为可能。本文提出了一种考虑综合缓解措施的基于物理的列车过路点听觉化模型。这些措施包括声轨磨削、避免车轮扁平、车轮和轨道阻尼器、轨道屏蔽、迷你屏障和经典隔音屏障。可选择列车类型、速度、轨道设计、观测器位置等通过参数。所提出的模型包括滚动噪声、碰撞噪声、牵引噪声、辅助系统噪声和气动噪声。这项工作的主要新颖之处在于改进了滚动噪声的时域合成。每个轮对的声辐射由多个运动点源模拟。针对轨道声辐射，提出了一种反映轨道结构波传播特性的运动和固定等效源混合模型。利用基于twins的计算和改进的滚动阻尼描述，考虑了径向和轴向车轮振动、垂直和横向轨道振动以及轨枕振动的独立源贡献。首先比较合成和记录的火车经过显示了非常好的一致性和高度的真实感。听觉化与沉浸式虚拟现实环境相结合，允许不同火车经过场景的交互式视听体验，并展示噪音缓解方案。所提出的模型在本文中描述的两个软件工具中实现并提供。这些工具已经成功地用于国际展览和居民信息活动的公开演示。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.