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About This Item


Full Description

Sets out an engineering method for determining the approximate sound power level of small noise sources, which is applicable only to noise sources for which one or more identifiable and reproducible modes of operation exists. Applies to small noise sources producing steady noise within a specified frequency range.

Document History

  1. AS 1217.4-1985


    Acoustics - Determination of sound power levels of noise sources, Part 4: Engineering methods for special reverberation test room

    • Most Recent
  2. AS 1217-1972

    Measurement of airborne sound emitted by machines

    • Historical Version