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Updated: Apr 30, 2026
09:36
Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements
Published on: June 25, 2021
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Long-term, global-scale statistics of sound propagation
1French-German Research Institute of Saint-Louis (ISL), 5 rue du Général Cassagnou, BP 70034, 68 301 Saint-Louis, France.
The Journal of the Acoustical Society of America
|May 13, 2014
Summary
Sound levels vary greatly due to changing weather. This study models sound propagation using weather data, revealing how wind and cycles impact sound climates globally, highlighting the need to consider turbulence and surface absorption.
Area of Science:
- Acoustics and atmospheric physics
Background:
- Near-surface sound levels exhibit significant variability due to atmospheric conditions.
- Understanding sound propagation is crucial for environmental noise assessment.
Purpose of the Study:
- To assess the variability of sound propagation using a numerical model.
- To investigate the influence of meteorological conditions on sound levels.
Main Methods:
- A numerical model simulating sound propagation, including ground reflection, refraction, and turbulence.
- Utilizing Numerical Weather Prediction data for atmospheric inputs, including turbulence.
- Analyzing relative sound levels from a 40 Hz point source at 1.5 km.
Main Results:
- Demonstrated the global diversity of sound propagation conditions.
- Identified modulation of sound propagation climates by wind regimes, seasonal, and diurnal cycles.
- Highlighted the impact of atmospheric turbulence and surface absorption on sound levels.
Conclusions:
- Numerical modeling provides insights into sound propagation variability.
- Meteorological factors significantly influence long-term sound propagation patterns.
- Accurate assessment requires careful consideration of sound scattering by turbulence and surface absorption.
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