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ANSI/ASA S12.57

2011 Edition, August 26, 2011

Complete Document

AMERICAN NATIONAL STANDARD Acoustics – Determination of sound power levels and sound energy levels of noise sources using sound pressure – Engineering/survey methods for use in situ in a reverberant environment

Includes all amendments and changes through Reaffirmation Notice , July 19, 2016


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SAME AS ISO 3747
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Product Details:

  • Revision: 2011 Edition, August 26, 2011
  • Published Date: July 19, 2016
  • Status: Active, Most Current
  • Document Language: English
  • Published By: Acoustical Society of America (ASA)
  • Page Count: 60
  • ANSI Approved: Yes
  • DoD Adopted: No

Description / Abstract:

General

This American National Standard specifies a method for determining the sound power level or sound energy level of a noise source by comparing measured sound pressure levels emitted by a noise source (machinery or equipment) mounted in situ in a reverberant environment, with those from a calibrated reference sound source. The sound power level (or, in the case of noise bursts or transient noise emission, the sound energy level) produced by the noise source, in frequency bands of width one octave, is calculated using those measurements. The sound power level or sound energy level with frequency Aweighting applied is calculated using the octave-band levels.

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