ASTM-E2235 › Standard Test Method for Determination of Decay Rates for Use in Sound Insulation Test Methods
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Scope
1.1 This test method covers the measurement of sound decay rate in rooms and the calculation of the sound absorption of the room and its contents. The sound absorption so calculated may be used in calculations in sound insulation test methods.
1.2 The method shall be used only in conjunction with other test methods where the logarithm of the sound absorption is used in formulas. It is not sufficiently precise for use in situations where room sound absorption is to be used without taking logarithms.
1.3 For laboratory measurements of the sound absorption of materials and objects, Test Method C 423 should be used.
1.4 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.
Keywords
decay rate; normalization of sound pressure level; reverberation time; room sound absorption; ICS Number Code 91.120.20 (Acoustics in buildings. Sound insulation)
To find similar documents by ASTM Volume:
04.06 (Thermal Insulation; Building and Environmental Acoustics)
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Document Number
ASTM-E2235-04R20
Revision Level
2004 R20 EDITION
Status
Current
Modification Type
New
Publication Date
April 16, 2020
Document Type
Test Method
Page Count
4 pages
Committee Number
E33.01