IEC 60651:1979/AMD1:1993/COR1:1994

IEC 60651:1979/AMD1:1993/COR1:1994

January 1979
International standard Cancelled

Corrigendum 1 - Amendment 1 - Sound level meters

Main informations

Collections

International IEC standards

Publication date

January 1979

Number of pages

0 p.

Reference

IEC 60651:1979/AMD1:1993/COR1:1994

Print number

1
Replaced standards (1)
IEC 60179:1973
January 1973
International standard Cancelled
Precision sound level meters

Standard replaced by (2)
IEC 61672-2:2003
April 2003
International standard Cancelled
Electroacoustics - Sound level meters - Part 2: Pattern evaluation tests

Provides details of the tests necessary to verify conformance to all mandatory specifications given in IEC 61672-1:2002 for conventional sound level meters, integrating-averaging sound level meters and integrating sound level meters. Pattern evaluation tests apply for each channel of a multi-channel sound level meter, as appropriate. Tests and test methods are applicable to class 1 and class 2 sound level meters. The aim is to ensure that all testing laboratories use consistent methods to perform pattern evaluation tests.

IEC 61672-1:2002
May 2002
International standard Cancelled
Electroacoustics - Sound level meters - Part 1: Specifications

Gives electroacoustical performance specifications for three kinds of sound measuring instruments: - a conventional sound level meter that measures exponential time-weighted sound level; - an integrating-averaging sound level meter that measures time-average sound level; and - an integrating sound level meter that measures sound exposure level. A single instrument may make any, or all, of the three kinds of measurements. Two performance categories, class 1 and class 2, are specified in this standard. In general, specifications for class 1 and class 2 sound level meters have the same design goals and differ mainly in the tolerance limits and the range of operational temperatures. Tolerance limits for class 2 specifications are greater than, or equal to, those for class 1 specifications. Sound level meters conforming to the requirements of this standard have a specified frequency response for sound incident on the microphone from one principal direction in an acoustic free field or from random directions.

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