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Main Title: A round robin on room acoustical simulation and auralization
Author(s): Brinkmann, Fabian
Aspöck, Lukas
Ackermann, David
Lepa, Steffen
Vorländer, Michael
Weinzierl, Stefan
Type: Article
Is Part Of: 10.14279/depositonce-8510
Language Code: en
Abstract: A round robin was conducted to evaluate the state of the art of room acoustic modeling software both in the physical and perceptual realms. The test was based on six acoustic scenes highlighting specific acoustic phenomena and for three complex, “real-world” spatial environments. The results demonstrate that most present simulation algorithms generate obvious model errors once the assumptions of geometrical acoustics are no longer met. As a consequence, they are neither able to provide a reliable pattern of early reflections nor do they provide a reliable prediction of room acoustic parameters outside a medium frequency range. In the perceptual domain, the algorithms under test could generate mostly plausible but not authentic auralizations, i.e., the difference between simulated and measured impulse responses of the same scene was always clearly audible. Most relevant for this perceptual difference are deviations in tone color and source position between measurement and simulation, which to a large extent can be traced back to the simplified use of random incidence absorption and scattering coefficients and shortcomings in the simulation of early reflections due to the missing or insufficient modeling of diffraction.
Issue Date: 30-Apr-2019
Date Available: 19-Jul-2019
DDC Class: 530 Physik
Subject(s): acoustics
sound perception
Sponsor/Funder: DFG, 174776315, FOR 1557: Simulation and Evaluation of Acoustical Environments (SEACEN)
Journal Title: Journal of the Acoustical Society of America
Publisher: Acoustical Society of America; AIP Publishing
Publisher Place: Melville, NY
Volume: 145
Issue: 4
Publisher DOI: 10.1121/1.5096178
Page Start: 2746
Page End: 2760
EISSN: 1520-8524
ISSN: 0001-4966
Appears in Collections:FG Audiokommunikation » Publications

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