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Objective Evaluation of Room Effects on Wave Field Synthesis

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This technical paper reports the objective evaluation of sound field reproduction using wave field synthesis (WFS) in a listening room. WFS is an open-loop technology for spatial audio and it assumes a free field as the reproduction space. The main objective of this experiment was to understand how much, and how, WFS performance is reduced in-room situation in comparison with free-field situation. These undesirable effects are characterized by the coloration of the frequency response functions (FRFs) and the presence of echoes and reverberation in the reproduced impulse responses of the WFS system. This paper only addresses the objective performance (frequency response functions and wavefront shape; not the perceptual appreciation) of sound field reproduction. On that matter, this technical paper thus validates and complements other objective evaluations previously published and performed with various WFS systems in different listening rooms. A comparative review of spatial aliasing frequency definitions is also discussed in the context of sound field reproduction.
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Document Type: Research Article

Publication date: September 1, 2007

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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