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- W2047952472 abstract "Methods and procedures for outdoor sound power measurement for reference sound sources according to ISO 6926/ANSI 12.5 are discussed. This method assures no low-frequency cutoff of the sound power determination. A quiet outdoor site with a sealed surface of suitable radius, clear of structures and trees is required. Measurement plan-positions are marked on the surface. Equipment components are prepared in advance for efficient deployment. Weather forecasts are used to determine day or night measurement periods that are free of rain and wind. When ready, site barometric pressure, dry bulb temperature, and wet bulb temperature are measured. The microphone height and the 2 m radius are positioned with a fixture. Sound pressure level data are acquired at all microphone positions, serially if necessary. Sound power results are corrected to standard conditions. High-frequency results are corrected for humidity as it affects sound absorption by air. Results obtained over several years and at a variety of temperatures are discussed." @default.
- W2047952472 created "2016-06-24" @default.
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- W2047952472 date "2010-10-01" @default.
- W2047952472 modified "2023-09-25" @default.
- W2047952472 title "Outdoor sound power calibration of reference sound sources." @default.
- W2047952472 doi "https://doi.org/10.1121/1.3508904" @default.
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