ASTM E1050-98
Historical Standard: ASTM E1050-98 Standard Test Method for Impedance and Absorption of Acoustical Materials Using a Tube, Two Microphones, and a Digital Frequency Analysis System
SUPERSEDED (see Active link, below)
ASTM E1050
1. Scope
1.1 This test method covers the use of an impedance tube and the use of a two-microphone method and a digital frequency analysis system for the measurement of normal incidence sound absorption coefficients and normal specific acoustic impedance ratios of materials.
1.2 This standard does not purport to address the safety problems associated with its use. It is the responsibility of the user of this standard to consult and 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
C384 Test Method for Impedance and Absorption of Acoustical Materials by Impedance Tube Method
C634 Terminology Relating to Building and Environmental Acoustics
E548 Guide for General Criteria Used for Evaluating Laboratory Competence
ISO Standards
ISO105342 Acoustics--Determination of Sound Absorption Coefficient and Impedance in Impedance Tubes--Part 2: Transfer-Function MethodANSI Standards
ANSI/ASAS1.11 Octave-Band and Fractional-Octave-Band Analog and Digital FiltersKeywords
absorption; frequency response function; impedance; impedance ratio; impedance tube; normal incidence sound absorption coefficient; specific normal acoustic impedance; transfer function; ICS Number Code 091.120.20
ICS Code
ICS Number Code 91.120.20 (Acoustics in buildings. Sound insulation)
DOI: 10.1520/E1050-98
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