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On the Accuracy of the Assessment of Room Acoustics Parameters Using MLS Technique and Numerical Simulation

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Abstract:

Advances in psychoacoustics through the years, have made it possible to evaluate the acoustical quality of a room, based on several numerical parameters that have been developed. Even though there is not a total agreement about which parameters are truly important, some of them are accepted by most of the acousticians. When designing a concert hall, ray-tracing softwares can be used to calculate some of these parameters. However, some input data carry some uncertainties. Available data for absorption coefficients have to be used carefully and, beyond that, there is not a standardized recommendation for measuring diffusion coefficients, nor a data base for this parameter. This paper presents a comparison of a room simulated with one of the commercial softwares available (RAYNOISE), and the measured parameters in this same room, using Maximum Length Sequence (MLS). Discrepancies over the results are investigated and analyzed.

Document Type: Research Article

Publication date: 2000-09-01

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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