Acoustics – Test methods for the qualification of freefield environments.

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Zdroj: Standards of Acoustical Society of America; 8/30/2021, Preceding pi-21, 28p
Abstrakt: 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. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index