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ISO 9053-2:2020
M00002135
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ISO 9053-2:2020 Acoustics - Determination of airflow resistance - Part 2: Alternating airflow method
standard by International Organization for Standardization, 09/01/2020
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ISO 9053-2:2020 specifies an alternating airflow method for the determination of the airflow resistance[5], [6] of porous materials for acoustical applications.
Determination of the airflow resistance based on static flow is described in ISO 9053-1.