1、January 2010DEUTSCHE NORM English price group 12No part of this standard 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).ICS 17.140.99!$V|“1565189w
2、ww.din.deDDIN EN ISO 11957Acoustics Determination of sound insulation performance of cabins Laboratory and in situ measurements (ISO 11957:1996)English version of DIN EN ISO 11957:2010-01Akustik Messung der Schalldmmung von Schallschutzkabinen Messungen im Labor und im Einsatzfall (ISO 11957:1996)En
3、glische Fassung DIN EN ISO 11957:2010-01SupersedesDIN EN ISO 11957:1997-02www.beuth.deDocument comprises pages20DIN EN ISO 11957:2010-01 National foreword This standard has been prepared by Technical Committee ISO/TC 43 “Acoustics“, Subcommittee SC 1 “Noise” (Secretariat: DS, Denmark), Working Group
4、 WG 36 “Acoustics Methods for determination of the acoustical performance of noise attenuating devices” 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 u
5、nd Schwingungstechnik im DIN und VDI (Acoustics, Noise Control and Vibration Engineering Standards Committee in DIN and VDI), Working Committee NA 001-02-02 AA Schallschutzeinrichtungen (Schalldmpfer, Kapseln, elastische Lagerung), Working Group NA 001-02-02-01 AK Sekundrer Schallschutz fr Luftschal
6、l (Kabinen, Kapseln, Schirme) Amendment of the European Machinery Directive has made it necessary to review Annex ZA in terms of the essential requirements of EU Directive 98/37/EC and the revised Directive, 2006/42/EC. The technical substance of the standard has not been changed. The DIN Standards
7、corresponding to the International Standards referred to in this document are shown below. The IEC numbers are listed in the currently valid five-digit versions, although they are cited in the text by their last three only (i.e. without “60”). ISO 717-1 DIN EN ISO 717-1 ISO 3740 DIN EN ISO 3740 ISO
8、3741 DIN EN ISO 3741 ISO 4871 DIN EN ISO 4871 ISO 11546-1 DIN EN ISO 11546-1 ISO 11546-2 DIN EN ISO 11546-2 IEC 60651 DIN EN 61672 (all parts) IEC 60804 DIN EN 61672 (all parts) IEC 60942 DIN EN 60942 IEC 61260 DIN EN 61260 The national standards are given in Annex NA “Bibliography”. Amendments This
9、 standard differs from DIN EN ISO 11957:1997-02 as follows: a) Annexes ZA and ZB have been supplemented to show the relationship between this standard and the Machinery Directive 98/37/EC and the new revised Machinery Directive 2006/42/EC. Previous editions DIN EN ISO 11957: 1997-02 2 DIN EN ISO 119
10、57:2010-01 National Annex NA (informative) Bibliography 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 61672-2, Electroacoustics Sound lev
11、el meters Part 2: Pattern evaluation tests DIN EN 61672-3, Electroacoustics Sound level meters Part 3: Periodic tests DIN EN ISO 717-1, Acoustics Rating of sound insulation in buildings and of building elements Part 1: Airborne sound insulation DIN EN ISO 3740, Determination of sound power levels of
12、 noise sources Guidelines for the use of basic standards DIN EN ISO 3741, Acoustics Determination of sound power levels of noise sources using sound pressure Precision methods for reverberation rooms DIN EN ISO 4871, Acoustics Declaration and verification of noise emission values of machinery and eq
13、uipment 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 11546-1, Acoustics Determination of sound insulation performances of enclosures Part 1: Measurements under laboratory conditions (for decl
14、aration purposes) DIN EN ISO 11546-2, Acoustics Determination of sound insulation performances of enclosures Part 2: Measurements in situ (for acceptance and verification purposes) 3 DIN EN ISO 11957:2010-01 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO
15、11957 August 2009 ICS 17.140.01 Supersedes EN ISO 11957:1996English Version Acoustics Determination of sound insulation performance of cabins Laboratory and in situ measurements (ISO 11957:1996) Acoustique Dtermination des performances disolation acoustique des cabines Mesurages en laboratoire et in
16、 situ (ISO 11957:1996) Akustik Messung der Schalldmmung von Schallschutzkabinen Messungen im Labor und im Einsatzfall (ISO 11957:1996)This European Standard was approved by CEN on 3 August 2009. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions
17、for giving this EuropeanStandard 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. This European Standard exists in three offic
18、ial versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions. CEN members are the national standards bodies of Austria, B
19、elgium, Bulgaria, 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 United Kingdom. EUROPEAN COMMITTEE FO
20、R STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 11957:2009: EContents PageForeword .3Anne
21、x ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC 15Annex ZB (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC 161 Scope . 4 2 Normative references . 4 3 Definitions
22、 4 4 Test environment and choice of suitable quantity 5 5 Instrumentation . 6 6 Measurement of sound insulation performance in the laboratory . 6 6.1 General . 6 6.2 Cabin location 6 6.3 Cabin mounting and conditions 6 6.4 Measurement of the sound pressure level in the room 7 6.5 Measurement of the
23、sound pressure level inside the cabin 7 6.6 Sound pressure insulation, Dp7 6.7 Measurement of noise inside the cabin due to noise sources forming an integral part of the cabin (internal noise level, LpA) 8 7 Measurement of sound insulation performance in situ.8 7.1 General 8 7.2 External sound field
24、 8 7.3 Cabin mounting and conditions 9 7.4 Microphone in the room 9 7.5 Microphone inside the oob n 9 7.6 Apparent sound pressure insulation, Dp9 7.7 Measurement of noise inside the cabin due to noise sources forming an integral part of the cabin (internal noise level, LpA) . 10 8 Weighted sound pre
25、ssure insulation 10 9 Estimated cabin noise insulation for a specific noise spectrum 10 10 Uncertainty 10 11 Information to be recorded 10 11.1 Test object . 10 11.2 Test conditions 11 11.3 Instrumentation . 11 11.4 Acoustical data 11 11.5 Further information . 11 12 Information to be reported . 11
26、Annex A (informative) Estimated cabin noise insulation for a specific noise spectrum 13 Annex B (informative) Bibliography . 14 EN ISO 11957:2009 (E) DIN EN ISO 11957:2010-01 2.Foreword The text of ISO 11957:1996 has been prepared by Technical Committee ISO/TC 43 “Acoustics” of the International Org
27、anization for Standardization (ISO) and has been taken over as EN ISO 11957:2009 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 identical text or by endorsement
28、, at the latest by January 2010, and conflicting national standards shall be withdrawn at the latest by January 2010. 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 responsible for identifying
29、 any or all such patent rights. This document supersedes EN ISO 11957:1996. 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 EC Directives. For relationship with EC Directives, see
30、informative Annexes ZA and ZB, which are integral parts 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, Cyprus, Czech Republic, Denmark, Est
31、onia, 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 11957:1996 has been approved by CE
32、N as a EN ISO 11957:2009 without any modification. EN ISO 11957:2009 (E) DIN EN ISO 11957:2010-01 31 Scope This International Standard specifies a laboratory method (clause 6) and in situ methods (clause 7) for the determination of the sound insulation performance of sound-protecting cabins. The sou
33、nd insulation per- formance is the reduction in sound pressure level or sound power level afforded by the cabin. The methods are applicable to cabins with a small leak ratio (e s 2 %). This International Standard is applicable to a complete cabin only and not to the individual components from which
34、it is made. NOTE 1 Sound insulations for cabin components such as wall elements, doors, windows, silencers, etc. should be measured according to other relevant standards. Requirements for the test environment in the labora- tory are based on those given in IS0 3741. IS0 717-I :- ), Acoustics - Ratin
35、g of sound insu- lation in buildings and of building elements - Part I: Airborne sound insulation. IS0 3741: -*), Acoustics - Determination of sound power levels of noise sources using sound press- ure - Precision methods for reverberation rooms. IS0 4871 :I 996, Acoustics - Declaration and verifi-
36、cation of noise emission values of machinery and equipment. IEC 651 :I 979, Sound /eve/ meters. I EC 804: 1985, Integrating-averaging sound level meters. I EC 942: 1988, Sound calibrators. I EC 1260: 1995, E lectroacoustics - fractional-octave-band filters. Octave-band and 2 Normative references 3 D
37、efinitions The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this Internation
38、al Standard are encouraged to in- vestigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid lnter- national Standards. For the purposes of this International Standard, the following definitions apply.
39、 3.1 A-weighting: Frequency weighting in accord- ance with IEC 651. 3.2 cabin: An enclosure specially designed to shield human beings from environmental noise. 1) To be published. (Revision of IS0 717-I : 1982) 2) To be published. (Revision of IS0 3741: 1988 and IS0 3742:1988) EN ISO 11957:2009 (E)
40、DIN EN ISO 11957:2010-01 43.3 sound pressure level, Lp: Ten times the log- arithm to the base 10 of the ratio of the mean-square sound pressure to the square of the reference sound pressure (= 20 PPa). It is expressed in decibels. 34 . average sound pressure level (on a mean- square basis), L, : Lp
41、=lOlg 1 oQ1 LPI+ l()W LP2+ , + 1p LPn n dB n -Y Lp are the sound pressure levels, in decibels, to be averaged; is the number of values to be averaged. It is expressed in decibels. 3.5 sound pressure insulation, Dp: Difference, in one-third-octave or octave bands, between the sound pressure level of
42、an external reverberant sound field and the sound pressure level inside a cabin located in this field. It is expressed in decibels. 3.6 apparent sound pressure insulation, D$ Dif- ference, in one-third-octave or octave bands, between the sound pressure level in a room and the sound pressure level in
43、 a cabin located in the room. It is ex- pressed in decibels. The sound field in the room need not necessarily be diffuse. NOTE 2 The word “apparent” indicates that the measure- ment has been carried out under in situ conditions. 3.7 apparent A-weighted sound pressure insu- lation, DlpA: Difference i
44、n A-weighted sound pressure levels measured in the room and in the cabin, respec- tively, when the actual environmental noise is used as the sound source. It is expressed in decibels. (See note 2.) 3.8 weighted sound pressure insulation, Dpw: Single-number value determined in accordance with the met
45、hod stated in IS0 717-1. It is expressed in decibels. However, the sound reduction index used in IS0 717-1 is replaced by the sound pressure insula- tion, Dp. (See clause 8.) 3.9 apparent weighted sound pressure insula- tion, D EN ISO 11957:2009 (E) DIN EN ISO 11957:2010-01 7w ) p cabin is the avera
46、ged sound pressure level, in decibels, in one-third-octave or octave bands inside the cabin. 6.7 Measurement of noise inside the cabin due to noise sources forming an integral part of the cabin (internal noise level, LpA) If the cabin includes noise sources (e.g. fans) installed as an integral part
47、of the cabin, the A-weighted sound pressure level inside the cabin, L r A, due to these shall be determined when the externa noise sources in the room have been switched off. For cabins with one or more well-defined positions, the sound pressure level shall be at these positions according to the met
48、hod s 6.5.2. operators measured Ipecified in For cabins with no well-defined operators positions, the sound pressure level shall be measured close to the middle of the cabin at three microphone positions on a sphere with radius 0,3 m or by averaging over a circular microphone path with a radius of 0
49、,3 m. The path shall be inclined by 45 relative to the horizontal plane. The centre of the measurement sphere/circle shall be I,55 m k 0,075 m above floor level. The measurement result, LpA, is the average value deter- mined on a mean-square basis. The background noise level inside the cabin (when integrated noise sources are switched off) shall be at least 6 dB and preferably more than 12 dB below the sound pressure level from the noise sources to be measured. If the difference is in th
