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DIN 45635-38:1986

Measurement of noise emitted by machines; airborne noise emission; enveloping surface method, reverberation room method and in-duct method; fans

The standard contains the determination of airborne noise emitted by fans; determination of sound power level using the enveloping surface method, reverberation room method and duct method for prescribed measuring conditions.

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Deutsches Institut für Normung [din]

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