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IEC 61183:1994 ed1.0

Действует
Electroacoustics - Random-incidence and diffuse-field calibration of sound level meters — 41 стр.
Describes a free-field calibration method for determining random-incidence sensitivity levels of sound level meters. Additionally, the standard describes a diffuse-field calibration method for determining diffuse-field sensitivity levels.
ICS
17.140.50 Electroacoustics. Including sound level meters / Электроакустика. Включая слуховые аппараты и шумомеры