BS EN ISO 3741-2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Precision methods for reverberation test rooms《声学 声压.pdf
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1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 3741:2010Acoustics Determinationof sound power levels andsound energy levels of noisesources using sound pressure Precision methods forreverberation test rooms (ISO3741
2、:2010)BS EN ISO 3741:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 3741:2010.It supersedes BS EN ISO 3741:2009 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee EH/1/4, Machinery noise.A list of organizatio
3、ns represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2010ISBN 978 0 580 56664 6ICS 17.140.01Compliance with a British Standard cannot c
4、onfer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 October 2010.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 3741 October 2010 ICS 17.140.01
5、Supersedes EN ISO 3741:2009English Version Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Precision methods for reverberation test rooms (ISO 3741:2010) Acoustique - Dtermination des niveaux de puissance et des niveaux dnergie acoustiq
6、ues mis par les sources de bruit partir de la pression acoustique - Mthodes de laboratoire en salles dessais rverbrantes (ISO 3741:2010) Akustik - Bestimmung der Schallleistungs- und Schallenergiepegel von Gerusch- quellen aus Schalldruckmessungen - Hallraumverfahren der Genauigkeitsklasse 1 (ISO 37
7、41:2010) This European Standard was approved by CEN on 14 August 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliograph
8、ical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a C
9、EN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
10、Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marn
11、ix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 3741:2010: EBS EN ISO 3741:2010EN ISO 3741:2010 (E) 3 Foreword The text of ISO 3741:2010 has been prepared by Technical Committee ISO/TC 43 “Acoustics”
12、 of the International Organization for Standardization (ISO) and has been taken over as EN ISO 3741:2010 by Technical Committee CEN/TC 211 “Acoustics” the secretariat of which is held by DS. This European Standard shall be given the status of a national standard, either by publication of an identica
13、l text or by endorsement, at the latest by April 2011, and conflicting national standards shall be withdrawn at the latest by April 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held respons
14、ible for identifying any or all such patent rights. This document supersedes EN ISO 3741:2009. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive. For relationship with E
15、U Directive, see informative Annex ZA, which is an integral part of this document. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Repu
16、blic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 3741:2010 has be
17、en approved by CEN as a EN ISO 3741:2010 without any modification. BS EN ISO 3741:2010EN ISO 3741:2010 (E) 4 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC This European Standard has been prepared under a mandate given to
18、CEN by the European Commission and the European Free Trade Association to provide one means of conforming to Essential Requirements of the New Approach Directive 2006/42/EC on machinery. Once this standard is cited in the Official Journal of the European Communities under that Directive and has been
19、 implemented as a national standard in at least one Member State, compliance with the normative clauses of this standard confers, within the limits of the scope of this standard, a presumption of conformity with the relevant Essential Requirements of that Directive and associated EFTA regulations. W
20、ARNING Other requirements and other EU Directives may be applicable to the products falling within the scope of this standard. BS EN ISO 3741:2010ISO 3741:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references2 3 Terms and definitions .2 4 Re
21、ference meteorological conditions .6 5 Reverberation test room.6 6 Instrumentation and measurement equipment 10 7 Definition, location, installation, and operation of noise source under test.10 8 Measurements in the reverberation test room .12 9 Determination of sound power levels and sound energy l
22、evels 19 10 Measurement uncertainty.27 11 Information to be recorded.30 12 Test report31 Annex A (informative) Guidelines for the design of reverberation test rooms 32 Annex B (informative) Guidelines for the design of rotating diffusing vanes 34 Annex C (normative) Reverberation test room qualifica
23、tion procedure for the measurement of broad-band sound .35 Annex D (normative) Reverberation test room qualification procedure for the measurement of discrete-frequency components37 Annex E (informative) Extension of frequency range to frequencies below 100 Hz42 Annex F (normative) Calculation of oc
24、tave band sound power levels and sound energy levels, A-weighted sound power levels and A-weighted sound energy levels from one-third-octave band levels .45 Annex G (informative) Guidelines on the development of information on measurement uncertainty .48 Bibliography60 BS EN ISO 3741:2010ISO 3741:20
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