Sound system designers are used to optimizing loudspeaker systems for the audience experience with free-field simulation software. However, noise pollution reduction must also be considered during the design phase and the propagation of sound may be affected by inhomogeneous atmospheric conditions, such as wind, temperature gradients, and ground impedance. This paper proposes a method to simulate the impact of the environment on sound pressure levels at large distances created by loudspeaker systems using parabolic equations, considering a reference left-right main system associated with either flown or ground-stacked subwoofers. Results show a higher variability of the sound pressure level with systems using ground-stacked subwoofers. The influence of the crossover frequency between main and subwoofers is discussed in this paper.

Authors: Mouterde, Thomas; Perrot, Joris; Lihoreau, Bertrand; Corteel, Etienne
Affiliations: L-Acoustics, Marcoussis, France; L-Acoustics, Marcoussis, France; Laboratoire d'Acoustique de l'Université du Mans, France; L-Acoustics, Marcoussis, France(See document for exact affiliation information.)
AES Convention: 153 (October 2022) Paper Number: 10617
Publication Date: October 19, 2022
Subject: Applications in Audio

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