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ASA S12.5-2016 /ISO 6926:2016
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ASA S12.5-2016 /ISO 6926:2016 American National Standard Acoustics - Requirements for the Performance and Calibration of Reference Sound Sources Used for the Determination of Sound Power Levels
standard by American National Standards of the Acoustical Society of America, 04/11/2016
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This Standard specifies the acoustical performance requirements and the important physical andperformance characteristics of reference sound sources and specifies procedures for their calibration.Reference sound sources are used extensively in "comparison methods" for determining the noiseemissions of physically stationary sound sources. A reference sound source of known sound power outputis used to establish the numerical relationship between the sound power level of a source, in a givenlocation, in a given acoustic environment and the space- and time-averaged sound pressure level at a setof microphone positions. Once that relationship is established, it is straightforward to measure the averagesound pressure level produced by an "unknown source" and to determine the sound power level producedby that source.This is an identical national adoption of ISO 6926:2016.