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Overview ISO 5136:2003 - "Acoustics - Determination of sound power radiated into a duct by fans and other air-moving devices - In-duct method" specifies a laboratory method to measure the sound power…
1 Scope 1.1 General This International Standard specifies a method for testing ducted fans and other air-moving devices to determine the sound power radiated into an anechoically terminated duct on t…