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ASA S12.79-2021

Test Methods for the Qualification of Free-field Environments
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ASA S12.79-2021

Test Methods for the Qualification of Free-field Environments

PUBLISH DATE 2021
ASA S12.79-2021
This document describes the divergence loss method of measurement of performance of an environment designed to provide a free sound field or free sound field over a reflecting plane. An acoustical environment is a free sound field if it has bounding surfaces that absorb all sound energies incident upon them. This is normally achieved using specialized test environments, such as anechoic or hemi-anechoic chambers. In practice, these provide a controlled free sound field for acoustical measurements in a confined space within the facility.
SDO ASA: Acoustical Society of America
Document Number S12.79
Publication Date Oct. 25, 2021
Language en - English
Page Count
Revision Level
Supercedes
Committee
Publish Date Document Id Type View
Oct. 25, 2021 Revision