ASTM WK72759

    Revision of C423 - 17 Standard Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method

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    Active Standard: C423 - 17

    Developed by Subcommittee: E33.01 | Committee E33 | Contact Staff Manager



    acoustical; acoustics; decay rate; noise; noise reduction coefficient; reverberation room;;


    Goals: Ballot #1 1)Define a minimum sample size for spaced or single free objects in ASTM C423 2)Require the sample designation to include a description of the object spacing, so that it is more clear that ASTM C423 test results are for that specific configuration. Ballot #2 3)Facilitate the common use of single number metric by architects in specifying sound absorption treatments, since spaced object arrays have become an architectural trend. 4)Provide a fair comparison for spaced object arrays to other ceiling acoustical treatment options such as ceiling tile, spray applied cellulose, acoustical deck, etc.

    Citing ASTM Standards
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    Work Item Status

    Date Initiated:

    Technical Contact:
    Eric Wolfram

    Draft Under Development