ASTM-C423 2008

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C423-08a Standard Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method

Published By	Publication Date	Number of Pages
ASTM	2008	11

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Categories: 91.120.20 - Acoustics in building. Sound insulation, ASTM

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Description

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 can be used for making field measurements of the absorption of rooms (see also ). A non-standard method to measure the absorption of rooms in the field is described in .

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

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.

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
2	Summary of Test Method Significance and Use Interferences
3	Reverberation Room Instrumentation
4	Test Specimen Procedure for Measuring Decay Rate
5	Calculations FIG. 1
6	Report
7	Precision and Bias Keywords TABLE 1 TABLE 2
8	A1. LABORATORY ACCREDITATION A1.1 A1.2 A1.3 A2. SPECIMENS THAT ARE ASYMMETRICAL OFFICE SCREENS A2.1 A2.2 A2.3 A2.4 A2.5
9	A3. TESTS TO QUALIFY THE REVERBERATION ROOM A3.1 A3.2 A3.3 A3.4 TABLE A3.1
10	X1. TESTS TO EXPLORE THE PERFORMANCE OF THE REVERBERATION ROOM X1.1 X1.2 X1.3
11	X2. FIELD TEST METHOD SUITABLE FOR OBTAINING DECAY RATES AND ROOM SOUND ABSORPTION X2.1 X2.2 X2.3 X2.4 X2.5

Additional information

Standard Title	C423-08a Standard Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method
Published Code	ASTM
Publication Date	2008
Pages Count	11
ICS Codes	91.120.20 - Acoustics in building. Sound insulation

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ASTM-C423 2008

1. Scope

PDF Catalog

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