ASTM-E1050:2010 Edition

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E1050-10 Standard Test Method for Impedance and Absorption of Acoustical Materials Using A Tube, Two Microphones and A Digital Frequency Analysis System

Published By	Publication Date	Number of Pages
ASTM	2010	12

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Category: ASTM

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Description

ASTM E1050-10

Historical Standard: Standard Test Method for Impedance and Absorption of Acoustical Materials Using A Tube, Two Microphones and A Digital Frequency Analysis System

ASTM E1050

Scope

1.1 This test method covers the use of an impedance tube, two microphone locations, and a digital frequency analysis system for the determination of normal incidence sound absorption coefficients and normal specific acoustic impedance ratios of materials.

1.2 Laboratory Accreditation—A procedure for accrediting a laboratory for performing this test method is given in Annex A1.

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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

Keywords

absorption; frequency response function; impedance; impedance ratio; impedance tube; normal incidence sound absorption coefficient; specific normal acoustic impedance; transfer function; Acoustical tests; Digital sound transmission; Impedance; Microphones; Signal/noise determination; Sound transmission–building materials/applications; Two-microphone method

ICS Code

ICS Number Code 091.120.20 ()

DOI: 10.1520/E1050-10

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
2	Summary of Test Method Significance and Use Apparatus
3	FIG. 1
4	TABLE 1
5	FIG. 2 FIG. 3
6	Test Specimen FIG. 4
7	Procedure
9	Sources of Error Report
10	Precision and Bias Keywords A1. LABORATORY ACCREDITATION A1.1 A1.2 TABLE 2
11	A1.3 X1. ALTERNATE CALIBRATION FACTOR MEASUREMENT X1.1 X1.2 REFERENCES

Additional information

Standard Title	E1050-10 Standard Test Method for Impedance and Absorption of Acoustical Materials Using A Tube, Two Microphones and A Digital Frequency Analysis System
Published Code	ASTM
Publication Date	2010
Pages Count	12