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ANSI S1.2

62nd Edition, 1971

Complete Document

METHOD FOR THE PHYSICAL MEASUREMENT OF SOUND

Includes all amendments and changes through Reaffirmation Notice , 1971


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Superseded By: ANSI/ASA S12.31

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W/D S/S BY ANSI/ASA S12.31
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Description / Abstract:

This standard applies primarily to airborne sound produced by apparatus which normally operates in air. These sounds must be nonimpulsive and of sufficient duration to be within the dynamic measuring capabilities of the instrumenta used.

This standard applies primarily to apparatus which radiates sound as a by-product of its primary function. However, the general principles apply also to other sources of sound.

If the microphone used to perform the sound pressure level measurementa is immersed in a moving air stream of appreciable velocity, or exposed to high temperatures or other adverse local environmental conditions, special precautions must be taken, a discussion of which is beyond the scope of this standard.