1、February 2011 Translation by DIN-Sprachendienst.English price group 29No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).I
2、CS 17.140.01!$m“1745699www.din.deDDIN EN ISO 3744Acoustics Determination of sound power levels and sound energy levels of noisesources using sound pressure Engineering methods for an essentially free field over a reflecting plane(ISO 3744:2010)English translation of DIN EN ISO 3744:2011-02Akustik Be
3、stimmung der Schallleistungs- und Schallenergiepegel von Geruschquellen ausSchalldruckmessungen Hllflchenverfahren der Genauigkeitsklasse 2 fr ein im Wesentlichen freies Schallfeldber einer reflektierenden Ebene (ISO 3744:2010)Englische bersetzung von DIN EN ISO 3744:2011-02Acoustique Dtermination d
4、es niveaux de puissance et dnergie acoustiques mis par les sources debruit partir de la pression acoustique Mthodes dexpertise pour des conditions approchant celles du champ libre sur planrflchissant (ISO 3744:2010)Traduction anglaise de DIN EN ISO 3744:2011-02SupersedesDIN EN ISO 3744:2009-11www.be
5、uth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.7802.11 DIN EN ISO 3744:2011-02 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 43 “Acoustics”, Subcommittee SC 1 “N
6、oise” (Secretariat: DS, Denmark), Working Group WG 28 “Basic machinery noise emission standards” in collaboration with Technical Committee CEN/TC 211 “Acoustics” (Secretariat: DS, Denmark). The responsible German body involved in its preparation was the Normenausschuss Akustik, Lrmminderung und Schw
7、ingungstechnik im DIN und VDI (Acoustics, Noise Control and Vibration Engineering Standards Committee in DIN and VDI), Working Committee NA 001-01-04 AA Geruschemission von Maschinen und Anlagen; Messung, Minderung, Datensammlung. The DIN Standards corresponding to the International Standards referr
8、ed to in this document are as follows: ISO 3382-2 DIN EN ISO 3382-2 ISO 7574-4 DIN EN 27574-4 ISO 3740 DIN EN ISO 3740 ISO 9614-1 DIN EN ISO 9614-1 ISO 3741 DIN EN ISO 3741 ISO 9614-2 DIN EN ISO 9614-2 ISO 3743-1 DIN EN ISO 3743-1 ISO 9614-3 DIN EN ISO 9614-3 ISO 3743-2 DIN EN ISO 3743-2 ISO 10534-1
9、 DIN EN ISO 10534-1 ISO 3745 DIN EN ISO 3745 ISO 10534-2 DIN EN ISO 10534-2 ISO 3746 DIN EN ISO 3746 ISO 11201 DIN EN ISO 11201 ISO 3747 DIN EN ISO 3747 ISO 12001 DIN EN ISO 12001 ISO 4871 DIN EN ISO 4871 ISO 13472-1 DIN ISO 13472-1 ISO 5725 (all parts) DIN ISO 5725 (all parts) ISO 80000-8 DIN EN IS
10、O 80000-8 ISO 6926 DIN EN ISO 6926 IEC 60942 DIN EN 60942 ISO 7574-1 DIN EN 27574-1 IEC 61260 DIN EN 61260 ISO 7574-2 DIN EN 27574-2 IEC 61672-1 DIN EN 61672-1 ISO 7574-3 DIN EN 27574-3 ISO/IEC Guide 98-3 DIN V ENV 13005 The national standards are given in Annex NA “Bibliography”. Amendments This st
11、andard differs from DIN EN ISO 3744:2009-11 as follows: a) specifications relating to absolute criteria for background noise have been included; b) the maximum permissible environmental correction has been changed from 2 dB to 4 dB; c) the determination of sound energy levels has been included; d) s
12、pecifications relating to the measurement uncertainty have been extended and a GUM-based approach has been included; e) for the determination of the environmental correction based on room absorption, the absorption area can alternatively be determined with a reference sound source; f) the preferred
13、microphone positions on the hemispherical measurement surface, suitable for all noise sources, have been modified; DIN EN ISO 3744:2011-02 3 g) specifications relating to microphone positions on a quarter-hemispherical measurement surface (sound source located in a corner) ; h) an alternative array
14、of microphone positions on the parallelepiped measurement surface has been added; i) specifications on microphone arrays on a cylindrical measurement surface have been included; j) Annex F “Alternative microphone array on a hemispherical measurement surface for direct measurements of A-weighted soun
15、d pressure levels” has been added; k) Annex G “Sound power level and sound energy level under reference meteorological conditions” has been added; l) Annex H “Guidelines on the development of information on measurement uncertainty” has been added; m) the standard has been editorially revised. Previo
16、us editions DIN 45635: 1970-03 DIN 45635-1: 1972-01, 1984-04 DIN EN ISO 3744: 1995-11, 2009-11 National Annex NA (informative) Bibliography DIN V ENV 13005, Guide to the expression of uncertainty in measurement DIN EN 27574-1, Acoustics Statistical methods for determining and verifying stated noise
17、emission values of machinery and equipment Part 1: General considerations and definitions DIN EN 27574-2, Acoustics Statistical methods for determining and verifying stated noise emission values of machinery and equipment Part 2: Methods for stated values for individual machines DIN EN 27574-3, Acou
18、stics Statistical methods for determining and verifying stated noise emission values of machinery and equipment Part 3: Simple (transition) method for stated values for batches of machines DIN EN 27574-4, Acoustics Statistical methods for determining and verifying stated noise emission values of mac
19、hinery and equipment Part 4: Methods for stated values for batches of machines DIN EN 60942, Electroacoustics Sound calibrators DIN EN 61260, Electroacoustics Octave-band and fractional-octave-band filters DIN EN 61672-1, Electroacoustics Sound level meters Part 1: Specifications DIN EN ISO 3382-2,
20、Acoustics Measurement of room acoustic parameters Part 2: Reverberation time in ordinary rooms have been ncludediDIN EN ISO 3744:2011-02 4 DIN EN ISO 3740, Acoustics Determination of sound power levels of noise sources Guidelines for the use of basic standards DIN EN ISO 3741, Acoustics Determinatio
21、n of sound power levels of noise sources using sound pressure Precision methods for reverberation rooms DIN EN ISO 3743-1, Acoustics Determination of sound power levels of noise sources Engineering methods for small, movable sources in reverberant fields Part 1: Comparison method for hard-walled tes
22、t rooms DIN EN ISO 3743-2, Acoustics Determination of sound power levels of noise sources using sound pressure Engineering methods for small, movable sources in reverberant fields Part 2: Methods for special reverberation test rooms DIN EN ISO 3745, Acoustics Determination of sound power levels of n
23、oise sources using sound pressure Precision methods for anechoic and hemi-anechoic rooms DIN EN ISO 3746, Acoustics Determination of sound power levels of noise sources using sound pressure Survey method using an enveloping measurement surface over a reflecting plane DIN EN ISO 3747, Acoustics Deter
24、mination of sound power levels of noise sources using sound pressure Comparison method for use in situ DIN EN ISO 4871, Acoustics Declaration and verification of noise emission values of machinery and equipment DIN EN ISO 6926, Acoustics Requirements for the performance and calibration of reference
25、sound sources used for the determination of sound power levels DIN EN ISO 9614-1, Acoustics Determination of sound power levels of noise sources using sound intensity Part 1: Measurement at discrete points DIN EN ISO 9614-2, Acoustics Determination of sound power levels of noise sources using sound
26、intensity Part 2: Measurement by scanning DIN EN ISO 9614-3, Acoustics Determination of sound power levels of noise sources using sound intensity Part 3: Precision method for measurement by scanning DIN EN ISO 10534-1, Acoustics Determination of sound absorption coefficient and impedance in impedanc
27、es tubes Part 1: Method using standing wave ratio DIN EN ISO 10534-2, Acoustics Determination of sound absorption coefficient and impedance in impedance tubes Part 2: Transfer-function method DIN EN ISO 11201, Acoustics Noise emitted by machinery and equipment Determination of emission sound pressur
28、e levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections DIN EN ISO 12001, Acoustics Noise emitted by machinery and equipment Rules for the drafting and presentation of a noise test code DIN EN ISO 8000
29、0-8, Quantities and units Part 8: Acoustics DIN ISO 5725 (all parts), Accuracy (trueness and precision) of measurement methods and results DIN ISO 13472-1, Acoustics Measurement of sound absorption properties of road surfaces in situ Part 1: Extended surface method EUROPEAN STANDARD NORME EUROPENNE
30、EUROPISCHE NORM EN ISO 3744 October 2010 ICS 17.140.01 Supersedes EN ISO 3744:2009English Version Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane (ISO 3744:2010)
31、Acoustique - Dtermination des niveaux de puissance et dnergie acoustiques mis par les sources de bruit partir de la pression acoustique - Mthodes dexpertise pour des conditions approchant celles du champ libre sur plan rflchissant (ISO 3744:2010) Akustik - Bestimmung der Schallleistungs- und Schalle
32、nergiepegel von Geruschquellen aus Schalldruckmessungen - Hllflchenverfahren der Genauigkeitsklasse 2 fr ein im Wesentlichen freies Schallfeld ber einer reflektierenden Ebene This European Standard was approved by CEN on 14 August 2010. CEN members are bound to comply with the CEN/CENELEC Internal R
33、egulations which stipulate the conditions for giving this European Standard the status of a national standard 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. T
34、his European Standard exists in three official versions (English, French, German). A version in any other language 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 ar
35、e the national standards bodies of 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, Swede
36、n, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES 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. R
37、ef. No. EN ISO 3744:2010: E(ISO 3744:2010) Contents 2 DIN EN ISO 3744:2011-02 EN ISO 3744:2010 (E) Page Foreword3 Introduction .4 1 Scope 5 2 Normative references 6 3 Terms and definitions .6 4 Test environment.12 5 Instrumentation15 6 Definition, location, installation, and operation of noise sourc
38、e under test .16 7 Reference box and measurement surface 18 8 Determination of sound power levels and sound energy levels 22 9 Measurement uncertainty .30 10 Information to be recorded .33 11 Test report 35 Annex A (normative) Qualification procedures for the acoustic environment.36 Annex B (normati
39、ve) Microphone arrays on a hemispherical measurement surface .41 Annex C (normative) Microphone arrays on a parallelepiped measurement surface .48 Annex D (informative) Microphone arrays on a cylindrical measurement surface 59 Annex E (normative) Calculation of A-weighted sound power levels and A-we
40、ighted sound energy levels from frequency band levels 63 Annex F (normative) Alternative microphone array on a hemispherical measurement surface for direct measurements of A-weighted sound pressure levels 65 Annex G (normative) Sound power level and sound energy level under reference meteorological
41、conditions.68 Annex H (informative) Guidelines on the development of information on measurement uncertainty.70 Bibliography 81 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC 83 Foreword The text of ISO 3744:2010 has been p
42、repared by Technical Committee ISO/TC 43 “Acoustics” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 3744:2010 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 nat
43、ional 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 subject of patent
44、rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 3744:2009. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential r
45、equirements 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 European Standard: Aus
46、tria, 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 the United Kingdom.
47、 Endorsement notice The text of ISO 3744:2010 has been approved by CEN as a EN ISO 3744:2010 without any modification. 3 DIN EN ISO 3744:2011-02 EN ISO 3744:2010 (E) Introduction This International Standard is one of the series ISO 37412to ISO 37476, which specify various methods for determining the
48、 sound power levels and sound energy levels of noise sources including machinery, equipment and their sub-assemblies. General guidelines to assist in the selection are provided in ISO 37401. The selection depends on the environment of the available test facility and on the precision of the sound pow
49、er level or sound energy level values required. It may be necessary to establish a noise test code (see ISO 12001) for the individual noise source in order to select the appropriate sound measurement surface and microphone array from among those allowed in each member of the ISO 37412to ISO 37476series, and to give requirements on test unit mounting, loading and operating conditions under which the sound power levels or sound energ
