ANSI S1.4

ANSI S1.4 is a standard developed by the American National Standards Institute that specifies methods for testing and rating the noise levels of sound measuring instruments, such as sound level meters. It ensures these devices provide accurate and consistent measurements of sound pressure levels in various environments. The standard covers aspects like calibration procedures, measurement accuracy, and instrument performance, helping users trust the data collected for noise assessment, occupational health, and environmental monitoring. Overall, ANSI S1.4 promotes reliability and uniformity in sound measurements across different devices and settings.