ASTM C423-08

    Standard Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method


      Format Pages Price  
    PDF 11 $67.00   ADD TO CART


    1. Scope

    1.1 This test method covers the measurement of sound absorption in a reverberation room by measuring decay rate. Procedures for measuring the absorption of a room, the absorption of an object, such as an office screen, and the sound absorption coefficients of a specimen of sound absorptive material, such as acoustical ceiling tile, are described.

    1.2 Field MeasurementsAlthough this test method primarily covers laboratory measurements, the test method described in 4.1 can be used for making field measurements of the absorption of rooms (see also 5.5). A non-standard method to measure the absorption of rooms in the field is described in Appendix X2.

    1.3 This test method includes information on laboratory accreditation (see Annex A1), asymmetrical screens (see Annex A2), and reverberation room qualification (see Annex A3).

    1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    C634 Terminology Relating to Building and Environmental Acoustics

    E795 Practices for Mounting Test Specimens During Sound Absorption Tests

    E2235 Test Method for Determination of Decay Rates for Use in Sound Insulation Test Methods


    ICS Code

    ICS Number Code 91.120.20 (Acoustics in buildings. Sound insulation)

    UNSPSC Code

    UNSPSC Code


    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/C0423-08

    Citation Format

    ASTM C423-08, Standard Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method, ASTM International, West Conshohocken, PA, 2008, www.astm.org

    Back to Top