ASTM C384-04(2022) PDF

Scope: 1.1 This test method covers the use of an impedance tube, alternatively called a standing wave apparatus, for the measurement of impedance ratios and the normal incidence sound absorption coefficients of acoustical materials. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM C384-04(2022) Referenced Document

ASTM C423 Standard Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method
ASTM C634 Standard Terminology Relating to Building and Environmental Acoustics
ASTM E548

2022 ASTM C384-04(2022) Standard Test Method for Impedance and Absorption of Acoustical Materials by Impedance Tube Method
2004 ASTM C384-04(2016) Standard Test Method for Impedance and Absorption of Acoustical Materials by Impedance Tube Method
2004 ASTM C384-04(2011) Standard Test Method for Impedance and Absorption of Acoustical Materials by Impedance Tube Method
2004 ASTM C384-04 Standard Test Method for Impedance and Absorption of Acoustical Materials by Impedance Tube Method
2003 ASTM C384-03 Standard Test Method for Impedance and Absorption of Acoustical Materials by the Impedance Tube Method
1998 ASTM C384-98 Standard Test Method for Impedance and Absorption of Acoustical Materials by the Impedance Tube Method