1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 3743-1:2010Acoustics Determinationof sound power levels andsound energy levels of noisesources using sound pressure Engineering methods forsmall movable sources inrever
2、berant fieldsPart 1: Comparison method for a hard-walled test room (ISO 3743-1:2010)BS EN ISO 3743-1:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO3743-1:2010. It supersedes BS EN ISO 3743-1:2009 which iswithdrawn.The UK participation in its preparatio
3、n was entrusted to TechnicalCommittee EH/1/4, Machinery noise.A list of organizations 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
4、 2010ISBN 978 0 580 53879 7ICS 17.140.01Compliance with a British Standard cannot confer 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 affectedEUROPE
5、AN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 3743-1 October 2010 ICS 17.140.01 Supersedes EN ISO 3743-1:2009English Version Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for small movable sources in reverbera
6、nt fields - Part 1: Comparison method for a hard-walled test room (ISO 3743-1:2010) Acoustique - Dtermination des niveaux de puissance et dnergie acoustiques mis par les sources de bruit partir de la pression acoustique - Mthodes dexpertise en champ rverbr applicables aux petites sources transportab
7、les - Partie 1: Mthode par comparaison en salle dessai parois dures (ISO 3743-1:2010) Akustik - Bestimmung der Schallleistungs- und Schallenergiepegel von Geruschquellen aus Schalldruckmessungen - Verfahren der Genauigkeitsklasse 2 fr kleine, transportable Quellen in Hallfeldern - Teil 1: Vergleichs
8、verfahren in einem Prfraum mit schallharten Wnden (ISO 3743-1:2010) 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 standa
9、rd without any alteration. Up-to-date lists and bibliographical 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 l
10、anguage made by translation under the responsibility of a CEN 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, Es
11、tonia, Finland, France, Germany, Greece, Hungary, Iceland, 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 EU
12、ROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 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 3743-1:2010: EBS EN ISO 3743-1:2010EN ISO 3743-1:2010 (E) 3 Foreword The text of ISO 3743-1:
13、2010 has been prepared by Technical Committee ISO/TC 43 “Acoustics” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 3743-1:2010 by Technical Committee CEN/TC 211 “Acoustics” the secretariat of which is held by DS. This European Standard shall be given th
14、e status of a national standard, either by publication of an identical 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 s
15、ubject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 3743-1:2009. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and s
16、upports essential requirements of EU Directive. For relationship with EU 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 Eur
17、opean Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, 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
18、the United Kingdom. Endorsement notice The text of ISO 3743-1:2010 has been approved by CEN as a EN ISO 3743-1:2010 without any modification. BS EN ISO 3743-1:2010EN ISO 3743-1:2010 (E) 4 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directiv
19、e 2006/42/EC This European Standard has been prepared under a mandate given to 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
20、 Official Journal of the European Communities under that Directive and has been 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 relev
21、ant Essential Requirements of that Directive and associated EFTA regulations. WARNING Other requirements and other EU Directives may be applicable to the products falling within the scope of this standard. BS EN ISO 3743-1:2010ISO 3743-1:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword
22、 iv Introduction.v 1 Scope1 2 Normative references1 3 Terms and definitions .2 4 Test room and size of noise source under test6 5 Instrumentation and measurement equipment 7 6 Definition, location, installation, and operation of noise source under test.8 7 Measurement procedure.10 8 Determination of
23、 sound power levels and sound energy levels 12 9 Measurement uncertainty.16 10 Information to be recorded.19 11 Test report21 Annex A (normative) Sound power level and sound energy level under reference meteorological conditions.22 Annex B (normative) Calculation of A-weighted sound power levels and
24、 A-weighted sound energy levels from octave band levels24 Annex C (informative) Guidelines on the development of information on measurement uncertainty 26 Bibliography35 BS EN ISO 3743-1:2010ISO 3743-1:2010(E) iv ISO 2010 All rights reservedForeword ISO (the International Organization for Standardiz
25、ation) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be
26、 represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standar
27、ds are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Intern
28、ational Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 3743-1 w
29、as prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 1, Noise. This second edition cancels and replaces the first edition (ISO 3743-1:1994), which has been technically revised. ISO 3743 consists of the following parts, under the general title Acoustics Determination of sound powe
30、r levels and sound energy levels of noise sources using sound pressure Engineering methods for small movable sources in reverberant fields: Part 1: Comparison method for a hard-walled test room Part 2: Methods for special reverberation test rooms BS EN ISO 3743-1:2010ISO 3743-1:2010(E) ISO 2010 All
31、rights reserved vIntroduction This part of ISO 3743 is an element of the series ISO 37401to ISO 37477, which specify various methods for determining the sound power levels and sound energy levels of noise sources including machinery, equipment and their sub-assemblies. The selection of one of the me
32、thods from the series for use in a particular application depends on the purpose of the test to determine the sound power level or sound energy level and on the facilities available. General guidelines to assist in the selection are provided in ISO 37401. ISO 37401to ISO 37477give only general princ
33、iples regarding the operating and mounting conditions of the machinery or equipment for the purposes of the test. It is important that test codes be established for individual kinds of noise source, in order to give detailed requirements for mounting, loading, and operating conditions under which th
34、e sound power levels or sound energy levels are to be obtained. The method given in this part of ISO 3743 is based on a comparison of the sound pressure levels in octave frequency bands of a noise source under test with those of a calibrated reference sound source; A-weighted sound power levels or s
35、ound energy levels may be calculated from the octave-band levels. The method is applied in a hard-walled test room with prescribed acoustical characteristics, where it can be used for small items of portable equipment. Such a room allows either the sound power levels or the sound energy levels of th
36、e noise source under test to be determined, depending on the character of the noise emitted by the source. However, this kind of test room is not suitable for larger pieces of stationary equipment which, due to their manner of operation or installation, cannot readily be moved. The application of th
37、e method for use where the equipment or machinery is found in situ is described in ISO 37477. The methods specified in this part of ISO 3743 permit the determination of the sound power level and the sound energy level in frequency bands and/or with frequency A-weighting applied. This part of ISO 374
38、3 describes a method of accuracy grade 2 (engineering grade) as defined in ISO 12001. For applications where greater accuracy is required, reference can be made to ISO 37412or an appropriate part of ISO 96141517. If the relevant criteria for the measurement environment specified in this part of ISO
39、3743 are not met, it might be possible to refer to another standard from this series, or to an appropriate part of ISO 96141517. BS EN ISO 3743-1:2010BS EN ISO 3743-1:2010INTERNATIONAL STANDARD ISO 3743-1:2010(E) ISO 2010 All rights reserved 1Acoustics Determination of sound power levels and sound e
40、nergy levels of noise sources using sound pressure Engineering methods for small movable sources in reverberant fields Part 1: Comparison method for a hard-walled test room 1 Scope 1.1 General This part of ISO 3743 specifies methods for determining the sound power level or sound energy level of a no
41、ise source by comparing measured sound pressure levels emitted by this source (machinery or equipment) mounted in a hard-walled test room, the characteristics of which are specified, with those from a calibrated reference sound source. The sound power level (or, in the case of noise bursts or transi
42、ent noise emission, the sound energy level) produced by the noise source, in frequency bands of width one octave, is calculated using those measurements. The sound power level or sound energy level with A-weighting applied is calculated using the octave-band levels. 1.2 Types of noise and noise sour
43、ces The method specified in this part of ISO 3743 is suitable for all types of noise (steady, non-steady, fluctuating, isolated bursts of sound energy, etc.) defined in ISO 12001. The noise source under test may be a device, machine, component or sub-assembly. The maximum size of the source depends
44、upon the size of the room used for the acoustical measurements (see 4.2). 1.3 Test environment The test environment that is applicable for measurements made in accordance with this part of ISO 3743 is a hard-walled test room with prescribed acoustical characteristics. 1.4 Measurement uncertainty Inf
45、ormation is given on the uncertainty of the sound power levels and sound energy levels determined in accordance with this part of ISO 3743, for measurements made in frequency octave bands and for A-weighted frequency calculations performed on them. The uncertainty conforms to ISO 12001:1996, accurac
46、y grade 2 (engineering grade). 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) appl
47、ies. ISO 5725 (all parts), Accuracy (trueness and precision) of measurement methods and results BS EN ISO 3743-1:2010ISO 3743-1:2010(E) 2 ISO 2010 All rights reservedISO 6926, Acoustics Requirements for the performance and calibration of reference sound sources for the determination of sound power l
48、evels ISO 12001:1996, Acoustics Noise emitted by machinery and equipment Rules for the drafting and presentation of a noise test code ISO/IEC Guide 98-3, Uncertainty in measurement Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) IEC 60942:2003, Electroacoustics Sound calibra
49、tors IEC 61260:1995, Electroacoustics Octave-band and fractional-octave-band filters IEC 61672-1:2002, Electroacoustics Sound level meters Part 1: Specifications 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 sound pressure p difference between instantaneous pressure and static pressure NOTE 1 Adapted from ISO 80000-8:200719, 8-9.2. NOTE 2 Sound pressure is expressed in pascals. 3.2 sound pressure level Lpten times the logarithm t
