Sound field control for reduction of noise from outdoor concerts

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Abstract

We investigate sound field control based on the concept of sound zones for the mitigation of low frequency noise from outdoor concerts to the surrounding area by adding secondary loudspeakers to the existing primary sound system. The filters for the secondary loudspeakers are the result of an optimization problem that minimizes the total sound pressure level of both primary and secondary loudspeakers in a sensitive area and the impact of the secondary loudspeakers on the audience area of the concert. We report results from three different experiments with increasing complexity and scale. The sound field control system was reducing the sound pressure level in the dark zone on average by 10 dB below 1 kHz in a small scale experiment in anechoic conditions, by up to 14 dB in a controlled large scale open-air experiment and by up to 6 dB at a pilot test at a music festival.
Original languageEnglish
Title of host publicationProceedings of 145th Audio Engineering Society Convention
Number of pages8
PublisherAudio Engineering Society
Publication date2018
Publication statusPublished - 2018
Event145th International Pro Audio Convention - Jacob K. Javits Convention Center, New York, United States
Duration: 17 Oct 201820 Oct 2018
http://www.aes.org/events/145/

Conference

Conference145th International Pro Audio Convention
LocationJacob K. Javits Convention Center
CountryUnited States
CityNew York
Period17/10/201820/10/2018
Internet address

Cite this

Heuchel, F. M., Caviedes Nozal, D., Agerkvist, F. T., & Brunskog, J. (2018). Sound field control for reduction of noise from outdoor concerts. In Proceedings of 145th Audio Engineering Society Convention Audio Engineering Society.