1、May 2012 Translation by DIN-Sprachendienst.English price group 12No 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).ICS 91
2、.120.20!$|o“1888976www.din.deDDIN EN ISO 3382-3Acoustics Measurement of room acoustic parameters Part 3: Open plan offices (ISO 3382-3:2012)English translation of DIN EN ISO 3382-3:2012-05Akustik Messung von Parametern der Raumakustik Teil 3: Groraumbros (ISO 3382-3:2012)Englische bersetzung von DIN
3、 EN ISO 3382-3:2012-05Acoustique Mesurage des paramtres acoustiques des salles Partie 3: Bureaux ouverts (ISO 3382-3:2012)Traduction anglaise de DIN EN ISO 3382-3:2012-05www.beuth.deDocument comprises 23 pagesIn case of doubt, the German-language original shall be considered authoritative.04.12 DIN
4、EN ISO 3382-3:2012-05 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 43/SC 2 “Building acoustics” (Secretariat: DIN, Germany), in collaboration with Technical Committee CEN/TC 126 “Acoustic properties of building elements and
5、of buildings” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Technical Committee NA 062-02-31 AA Schalldmmung und Schallabsorption, Messung und Bewertung. The DIN Standards correspo
6、nding to the International Standards referred to in this document are as follows: ISO 3382-1 DIN EN ISO 3382-1 ISO 3382-2 DIN EN ISO 3382-2 ISO 3740 DIN EN ISO 3740 ISO 3741 DIN EN ISO 3741 ISO 3743-1 DIN EN ISO 3743-1 ISO 3743-2 DIN EN ISO 3743-2 ISO 3744 DIN EN ISO 3744 ISO 3745 DIN EN ISO 3745 IS
7、O 14257 DIN EN ISO 14257 ISO 16032 DIN EN ISO 16032 IEC 60268-16 DIN EN 60268-16 IEC 61260 DIN EN 61260 IEC 61672-1 DIN EN 61672-1 DIN EN ISO 3382-3:2012-05 3 National Annex NA (informative) Bibliography DIN EN 60268-16, Sound system equipment Part 16: Objective rating of speech intelligibility by s
8、peech transmission index 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 3382-1, Acoustics Measurement of room acoustic parameters Part 1: Performance spaces DIN EN ISO 3382-2, Acousti
9、cs Measurement of room acoustic parameters Part 2: Reverberation time in ordinary rooms 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 Determination of sound power levels and sound energy levels of
10、noise sources using sound pressure Precision methods for reverberation test rooms DIN EN ISO 3743-1, Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for small, movable sources in reverberant fields Part 1: Comparison met
11、hod for a hard-walled test room 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 3744, Acoustics Determination of
12、 sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for an essentially free field over a reflecting plane DIN EN ISO 3745, Acoustics Determination of sound power levels of noise sources using sound pressure Precision methods for anechoic and hemi-ane
13、choic rooms DIN EN ISO 14257, Acoustics Measurement and parametric description of spatial sound distribution curves in workrooms for evaluation of their acoustical performance DIN EN ISO 16032, Acoustics Measurement of sound pressure level from service equipment in buildings Engineering method DIN E
14、N ISO 3382-3:2012-05 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 3382-3 February 2012 ICS 91.120.20 English Version Acoustics - Measurement of room acoustic parameters - Part 3: Open plan offices (ISO 3382-3:2012) Acoustique - Mesurage des paramtres ac
15、oustiques des salles - Partie 3: Bureaux ouverts (ISO 3382-3:2012) Akustik - Messung von Parametern der Raumakustik - Teil 3: Durchgehende Rume (ISO 3382-3:2012) This European Standard was approved by CEN on 14 January 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations w
16、hich 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-CENELEC Management Centre or to any CEN member. This
17、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-CENELEC Management Centre has the same status as the official versions. CEN member
18、s are 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, S
19、weden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN nationa
20、l Members. Ref. No. EN ISO 3382-3:2012: EContents PageForeword .Introduction 1 Scope 2 Normative references .3 Terms and definitions .4 Single number quantities 5 Measurement conditions .5.1 Equipment .5.2 Measurement procedure .6 Determination of single number quantities .6.1 Sound power spectrum o
21、f normal speech .6.2 Spatial decay rate of A-weighted sound pressure level of speech 6.3 Distraction and privacy distances 6.4 Background noise .7 Test report .Annex A (informative) Examples of target values for evaluation of measurement data . 15Annex B (informative) Relation between speech transmi
22、ssion index and work performance16Bibliography .18EN ISO 3382-3:2012 (E) DIN EN ISO 3382-3:2012-05 2345556777101010131313Foreword This document (EN ISO 3382-3:2012) has been prepared by Technical Committee ISO/TC 43 “Acoustics“ in collaboration with the Technical Committee CEN/TC 126 “Acoustic prope
23、rties of building elements and of buildings” the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2012, and conflicting national standards shall be wit
24、hdrawn at the latest by August 2012. 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 any or all such patent rights. According to the CEN/CENELEC Internal Regulations
25、, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Ne
26、therlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 3382-3:2012 has been approved by CEN as a EN ISO 3382-3:2012 without any modification. EN ISO 3382-3:2012 (E) DIN EN ISO 3382-3:2012-05 3 In
27、troductionThe phrase “open plan offices” in the context of this part of ISO 3382 covers offices and similar spaces where a large number of people can work, have a conversation, or concentrate independently in well-defined work stations. In open plan offices, the occupants are affected by activities
28、surrounding them. Insufficient acoustic conditions lead to distraction and a lack of speech privacy. Distraction weakens the ability to concentrate and reduces productivity, especially in tasks requiring cognitive resources. Low speech privacy prevents confidential or partly confidential conversatio
29、ns. Speech can be intrusive for the listener, whereas for the speaker, it can be desirable to avoid involuntary spread of speech of a private nature.The design of open plan spaces includes careful consideration of the layout of the workstations and mutual arrangement of teams or workgroups. Other fa
30、ctors affecting the acoustical performance of open plan spaces are sound absorption, height of screens and storage units, background noise, degree of workstation enclosure, distance between workstations, and room dimensions. The reverberation time of a room used to be regarded as the predominant ind
31、icator of its acoustical properties. However, there is evidence that other types of measurements such as rate of spatial decay of sound pressure levels, speech transmission index and background noise levels are needed for a more complete evaluation. If reverberation time is considered relevant, it s
32、hould be measured in accordance with ISO 3382-2.This part of ISO 3382 specifies a measurement method which results in single number quantities indicating the general acoustical performance of open plan offices. The principal aim is good speech privacy between workstations. The measurement method and
33、 resulting single number quantities correspond well with perceived acoustic conditions of the worker.Furniture strongly affects acoustic conditions. Therefore, the measurements are performed only when the room is completely finished, including furniture. Measurement in an unfurnished room does not d
34、escribe the perceived acoustical conditions. It is also important that the measurements are carried out when people are absent, but with the normal daytime background noise, whether it is caused by ventilation, traffic noise or an artificial masking sound system. If people are present, the backgroun
35、d noise level varies strongly with time and the determination of reliable results becomes impossible.The single number quantities are designed to represent the situation where a single person is talking and the rest are silent. Therefore, the measurements are made by using a single loudspeaker. If m
36、any people speak simultaneously, the masking is increased and the degree of distraction gets weaker (see Reference 10). Therefore, the results describe the most distracting situation. However, this part of ISO 3382 can be used to determine the room acoustic quality of, for example, call centres wher
37、e many speakers are active continuously. In such cases, the sound environment caused by many simultaneous speakers may cause a positive speech masking effect and the results of this part of ISO 3382 may underestimate the perceived speech privacy.EN ISO 3382-3:2012 (E) DIN EN ISO 3382-3:2012-05 41 Sc
38、opeThis part of ISO 3382 specifies methods for the measurement of room acoustic properties in open plan offices with furnishing. It specifies measurement procedures, the apparatus needed, the coverage required, the method for evaluating the data, and the presentation of the test report.The measureme
39、nt results can be used to evaluate room acoustic properties in open plan offices. This part of ISO 3382 is intended for medium and large size open plan offices.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only
40、the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 3382-1, Acoustics Measurement of room acoustic parameters Part 1: Performance spacesISO 3740, Acoustics Determination of sound power levels of noise sources Guideli
41、nes for the use of basic standardsISO 3744, 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 planeISO 14257, Acoustics Measurement and parametric description of spatial soun
42、d distribution curves in workrooms for evaluation of their acoustical performanceISO 16032, Acoustics Measurement of sound pressure level from service equipment in buildings Engineering methodIEC 61672-1, Electroacoustics Sound level meters Part 1: SpecificationsIEC 61260, Electroacoustics Octave-ba
43、nd and fractional-octave-band filtersIEC 60268-16:2011, Sound system equipment Part 16: Objective rating of speech intelligibility by speech transmission index3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1spatial sound distribution of the A-we
44、ighted sound pressure level of speechcurve which shows how the A-weighted sound pressure level decreases as a function of the distance from the sound source emitting noise with the sound power spectrum of normal speechEN ISO 3382-3:2012 (E) DIN EN ISO 3382-3:2012-05 5 3.2spatial decay rate of speech
45、D2,Srate of spatial decay of A-weighted sound pressure level of speech per distance doublingNOTE This definition is an application of DL2defined in ISO 14257, but using the spectrum of normal speech and A-weighting over the whole frequency range. The spatial decay is not determined for individual oc
46、tave bands.3.3A-weighted sound pressure level of speech at a distance of 4 mLp,A,S,4 mnominal A-weighted sound pressure level of normal speech at a distance of 4,0 m from the sound sourceNOTE The measurement position does not need to be located at this distance from the sound source. Lp,A,S,4 mis ob
47、tained using a linear regression line from the spatial sound distribution of the A-weighted sound pressure level (SPL) of speech.3.4speech transmission indexSTIphysical quantity representing the transmission quality of speech with respect to intelligibilityIEC 60268-16:20113.5spatial sound distribut
48、ion of the speech transmission indexcurve which shows how the speech transmission index decreases from a reference sound source when distance increases3.6distraction distancerDdistance from speaker where the speech transmission index falls below 0,50NOTE 1 Distraction distance is expressed in metres.NOTE 2 Abo
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