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ACOUSTICS - MEASUREMENT OF SOUND ABSORPTION IN A REVERBERATION ROOM
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Available format(s): Hardcopy, PDF
Language(s): English
Published date: 01-01-2003
Publisher: National Standards Authority of Ireland
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.Only cited Standards give presumption of conformance to New Approach Directives/Regulations.Dates of withdrawal of national standards are available from NSAI.
Foreword Introduction1 Scope2 Normative references3 Terms and definitions4 Principle5 Frequency range6 Test arrangement 6.1 Reverberation room and diffusion of sound field 6.2 Test specimens 6.3 Temperature and relative humidity7 Measurement of reverberation time 7.1 General 7.2 Interrupted noise method 7.3 Integrated impulse response method 7.4 Evaluation of reverberation times based on decay curves 8 Expression of results 8.1 Method of calculation 8.2 Precision 8.3 Presentation of results9 Test reportAnnex A (normative) - Diffusivity of the sound field in the reverberation roomAnnex B (normative) - Test specimen mountings for sound absorption testsBibliographyAnnex ZA (normative) - Normative references to international publications with their relevant European publications
Provides a method of measuring the sound absorption coefficient of acoustical materials used as wall or ceiling treatments, or the equivalent sound absorption area of objects, such as furniture, persons or space absorbers, in a reverberation room.
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