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Thursday, October 28 • 9:00pm - Friday, December 3 • 6:00pm
On the comparison of flown and ground-stacked subwoofer configurations regarding noise pollution

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In addition to audience experience and hearing health concerns, noise pollution issues are increasingly considered in large scale sound reinforcement for outdoor events. Among other factors, subwoofer positioning relative to the main system influences sound pressure levels at large distances, which may be considered as noise pollution.
In this paper, free field simulations are first performed showing that subwoofers positioning affects rear and side rejections but has a limited impact on noise level in front of the system. Then, the impact of wind on sound propagation at low frequencies is investigated. Simulation results show that the wind impacts more ground-stacked subwoofers than flown subwoofers, leading to higher sound levels downwind in the case of ground-stacked subwoofers.

avatar for Etienne Corteel

Etienne Corteel

Director of Education & Scientific Outreach, global, L-Acoustics
Governing the scientific outreach strategy, Etienne and his team are the interface between L-Acoustics and the scientific and education communities. Their mission is to develop and maintain an education program tailor-made for the professional sound industry. Etienne also contributes... Read More →
avatar for Thomas Mouterde

Thomas Mouterde

Field application research engineer, L-Acoustics
Thomas Mouterde is a field application research engineer at L-Acoustics, a French manufacturer of loudspeakers, amplifiers, and signal processing devices. He is a member of the “Education and Scientific Outreach” department that aims at developing the education program of the... Read More →

Thursday October 28, 2021 9:00pm - Friday December 3, 2021 6:00pm EST