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ISO 9053-2:2020
Acoustics - Determination of airflow resistance - Part 2: Alternating airflow method
This document 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.
International Organization for Standardization [iso]