ASTM C384-03
Historical Standard: ASTM C384-03 Standard Test Method for Impedance and Absorption of Acoustical Materials by the Impedance Tube Method
SUPERSEDED (see Active link, below)
ASTM C384
1. 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 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.
1.3 The values stated in SI units are to be regarded as the standard.
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
C423 Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method
C634 Terminology Relating to Building and Environmental Acoustics
E548 Guide for General Criteria Used for Evaluating Laboratory Competence
ANSI Standards
S1.6 Preferred Frequencies and Band Numbers for Acoustical Measurements Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.Keywords
absorption; impedance; impedance ratio; impedance tube; normal incidence sound absorption coefficient; specific normal acoustic impedance;
ICS Code
ICS Number Code 91.120.20 (Acoustics in buildings. Sound insulation)
DOI: 10.1520/C0384-03
ASTM International is a member of CrossRef.