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Correlation of Apparent Source Width with Objective Measures in Synthetic Sound Fields


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One of the important sub-components of spatial impression in concert halls is associated with the apparent broadening of the sound source (e.g., an orchestra) beyond its optical size. While this is thought of being an important attribute of concert halls, there is no agreement about which objective measure is best suited for predicting it. In the present paper, the ability of three candidate measures, namely LFE4, IACCE3 and RL′E, to predict ASW in listening tests with synthetic sound fields consisting of the direct sound and up to 8 reflections, is investigated. The results of these tests suggest that out of these three, RL′E should be preferred. In order to apply this result to hall design, two further steps will be required: The effect of diffuse reflections must be studied in future listening tests and more precise calibration techniques must be developed.
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Document Type: Research Article

Publication date: July 1, 2004

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  • 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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