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Contextual Aspects in Subjective Vehicle Sound Assessment

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In vehicle acoustics, the quantities comfort, sportiness, type conformity and make conformity are facets of overall sound quality. However, little attention is usually paid to contextual influences such as the vehicle's type or make, the driving condition one is engaged in or the driver type itself. These contextual aspects are expected to have a significant influence on sound quality assessment. In this paper, the results of an exploratory field study are used to determine the interactions between the aforementioned acoustic quantities on the one hand and contextual aspects on the other hand when assessing sound quality. Based on field test results of 85 subjects that participated in six car sound conditions, a regression model was determined that predicts overall sound quality from comfort, sportiness and type conformity. The predictive power of these three quantities varies depending on the considered car and driver type. Further analyses showed that for comfort and sportiness, much predictive power was obtained from specific driving conditions. Comfort is determined mainly in "static" driving conditions such as driving with constant speed, whereas sportiness manifests in a broader range of situations, with an emphasis on dynamic driving. Type conformity was observed as being closely related to comfort for non-sporty cars and to sportiness for sporty cars, respectively. These effects show that besides acoustic properties, context effects influence how acoustic properties are evaluated by subjects.
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Document Type: Research Article

Publication date: May 1, 2019

More about this publication?
  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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