The effect of atmospheric conditions on sound propagation and its impact on the outdoor sound field control

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Abstract

The performance of active sound field control solutions is directly dependent on the knowledge of the acoustic transfer functions between the control loudspeakers
and control areas. Outdoors, the propagation of sound and thus these transfer functions are affected by atmospheric conditions and their variation. In this work we experimentally investigate the effect of wind and temperature changes on transfer functions. We present the results of a measurement campaign, where transfer functions and weather data were gathered every 30 minutes for a time period of a week. The results show the impact of wind (up to 8 m/s) and temperature (−2C to 6C) variations on the sound propagation over distances of around 300 m. We discuss the results in relation to the outdoor control of sound.
Original languageEnglish
Title of host publicationProceedings of internoise 2019
Number of pages10
PublisherInternational Institute of Noise Control Engineering
Publication date2019
ISBN (Print)978-84-87985-31-7
Publication statusPublished - 2019
Event48th International Congress and Exhibition on Noise Control Engineering - Palacio Municipal de Congresos de Madrid, Madrid, Spain
Duration: 16 Jun 201919 Jun 2019
Conference number: 48
https://internoise2019.org/

Conference

Conference48th International Congress and Exhibition on Noise Control Engineering
Number48
LocationPalacio Municipal de Congresos de Madrid
CountrySpain
CityMadrid
Period16/06/201919/06/2019
Internet address

Keywords

  • Outdoor sound propagation
  • Active control of sound

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