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- W2037862511 abstract "As part of the AHRI, ASA-ANSI, and ISO standard development processes, the uncertainty of sound power measurements needs to be quantified for inclusion in sound power standards. A study of three reverberation rooms with volumes of 140, 280, and 560 cm3 was undertaken. Sound power levels for two noise sources (a horizontal shafted reference sound source and a leaf blower) were determined using ARI Standard 220. Variables investigated include source location, source orientation, room conditions, source operating characteristics, and microphone traverse length. The frequency range of interest was 25 Hz–10 kHz. Measurements were repeated and the order of tests was randomized. Of particular interest was the difference between the 140-ft3 room and the other rooms to confirm the room qualification process required by ARI Standard 220 because the 140-ft3 room does not meet the ARI Standard 220 qualification process but does meet the requirements in ISO 3741. This work will be helpful in understanding the sources of variation and allow for a starting point for determining if improvements are needed and if so what factors should be considered." @default.
- W2037862511 created "2016-06-24" @default.
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- W2037862511 date "2009-10-01" @default.
- W2037862511 modified "2023-09-24" @default.
- W2037862511 title "Uncertainty of sound power levels determined following Air Conditioning Heating and Refrigeration Institute Standard 220." @default.
- W2037862511 doi "https://doi.org/10.1121/1.3248446" @default.
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