ANSI/ASA S1.4-1983 (R2001)

Amendments: All current amendments are included with the purchase of this document.

The purpose of this standard is to ensure maximum practical accuracy in any particular sound level meter and to reduce any difference in corresponding measurements obtained when various makes and models of meters are used.



Vendor Note: This standard is a revision of the American National Standard Specification for Sound Level Meters, S1.4-1971. It conformsas closely as possible to the IEC Standard for Sound Level Meters, Publication 651, First Edition issued in 1979. This revisionrepresents a significant improvement over ANSI S1.4-1971, particularly in its specifications relating to measurement oftransient sound signals. It also permits the use of digital techniques and displays. The principal changes from ANSI S1.4-1971are: inclusion of an optional impulse exponential-time averaging characteristic, inclusion of an optional peak characteristics,more rigorous definition of the dynamic characteristics for the Fast and Slow exponential-time-averaging, increase in the crestfactor requirement to ten for type 1 instruments, specification of a type 0 laboratory instrument with generally smaller tolerancelimits than those previously specified for type 1, and deletion of the type 3 survey instrument.

This product referenced by:ANSI/ASME B133.8-2011 - American National Standard Specification for Sound Level Meters
SAE J 184 - American National Standard Specification for Sound Level Meters
ASTM E1179-87(1998) - American National Standard Specification for Sound Level Meters
ASTM E936-98 - American National Standard Specification for Sound Level Meters
IEEE 1277-2000 - American National Standard Specification for Sound Level Meters

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