BS EN ISO 14257-2001 Acoustics - Measurement and parametric description of spatial sound distribution curves in workrooms for evaluation of their acoustical performance《声学 为评估其声学性能.pdf

1、BRITISH STANDARD BS EN ISO 14257:2001 Incorporating Corrigendum No. 1 Acoustics Measurement and parametric description of spatial sound distribution curves in workrooms for evaluation of their acoustical performance The European Standard EN ISO 14257:2001 has the status of a British Standard ICS 13.

2、140; 17.140 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN ISO 14257:2001 This British Standard, having been prepared under the direction of the Health and Environmental Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and S

3、trategy Committee on 14 November 2001 BSI 25 January 2002 ISBN 0 580 38673 2 National foreword This British Standard is the official English language version of EN ISO 14257:2001. It is identical with ISO 14257:2001. The UK participation in its preparation was entrusted by Technical Committee EH/1,

4、Acoustics, to subcommittee EH/1/4, Machinery noise, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this

5、 document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users

6、 of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or

7、 proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages

8、ii to v, a blank page, pages 1 to 25, the annex ZA page, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 13673 Incorp. Corr. No. 1 25 January 2002 Incorpor

9、ating annex ZAEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO14257 October2001 ICS13.140 Englishversion AcousticsMeasurementandparametricdescriptionofspatial sounddistributioncurvesinworkroomsforevaluationoftheir acousticalperformance(ISO14257:2001) AcoustiqueMesurageetdescriptionparamtriquedes

10、 courbesdedcroissancesonorespatialedansleslocaux detravailenvuedelvaluationdeleurperformance acoustique(ISO14257:2001) AkustikMessungundParametrisierungvon SchallausbreitungskurveninArbeitrumenzumZweckder BeurteilungderakustischenQualittderRume(ISO 14257:2001) ThisEuropeanStandardwasapprovedbyCENon5

11、October2001. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCe

12、ntreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbo

13、diesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart

14、,36B1050Brussels 2001CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO14257:2001ECORRECTED20011212 Foreword ThetextoftheInternationalStandardISO14257:2001hasbeenpreparedbyTechnical CommitteeISO/TC43“Acoustics“incollaborationwithTechnicalCommitteeC

15、EN/TC211 “Acoustics“,thesecretariatofwhichisheldbyDS. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationof anidenticaltextorbyendorsement,atthelatestbyApril2002,andconflictingnational standardsshallbewithdrawnatthelatestbyApril2002. AccordingtotheCEN/CENELECInternalRegu

16、lations,thenationalstandardsorganizationsof thefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Czech Republic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg, Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandtheUnitedKingdom. Endorsementnotice T

17、hetextoftheInternationalStandardISO14257:2001wasapprovedbyCENasaEuropean Standardwithoutanymodification. NOTE:NormativereferencestoInternationalStandardsarelistedinannexZA(normative). ENISO14257:2001Reference number ISO 14257:2001(E) INTERNATIONAL STANDARD ISO 14257 First edition 2001-10-15 Acoustic

18、s Measurement and parametric description of spatial sound distribution curves in workrooms for evaluation of their acoustical performance Acoustique Mesurage et description paramtrique des courbes de dcroissance sonore spatiale dans les locaux de travail en vue de lvaluation de leur performance acou

19、stique ENISO14257:2001 ii ENISO14257:2001 iii Contents Page Foreword.iv Introduction.v 1 Scope 1 2 Normative references 1 3 Terms and definitions .1 4 Sound distribution in a room3 4.1 General3 4.2 Spatial sound distribution curves3 5 Measurement of the spatial sound distribution curve.5 5.1 Specifi

20、cations regarding the sound source used for the test 5 5.2 Measurement instrumentation .6 5.3 Measurement path and points7 5.4 Measurement procedure .8 5.5 Representation of the measured data .8 6 Parametric description of the measured spatial sound distribution curve in view of evaluation of the ac

21、oustical performance of workrooms.9 6.1 General9 6.2 Distance ranges .9 6.3 Determination of the rate of spatial decay of sound pressure levels per distance doubling,DL 2 .9 6.4 Determination of the excess of sound pressure level with respect to a reference sound distribution curve,DL f .10 6.5 Eval

22、uation of measured data12 7 Information to be recorded and reported12 Annex A (normative) Performance requirements for the sound source to be used for the test 14 Annex B (normative) Correction of measured sound distribution curves to account for differences in ground reflections and source directiv

23、ity.16 Annex C (informative) Example of use of this International Standard 17 Bibliography25 ENISO14257:2001 iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards

24、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 represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take pa

25、rt in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the

26、 technical committees are circulated to the member bodies for voting. Publication as an International 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 International Standard may be the subject of

27、patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 14257 was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 1, Noise. Annexes A and B form a normative part of this International Standard. Annex C is for in

28、formation only. ENISO14257:2001 v Introduction According to ISO 11690-1, the spatial sound distribution in a workroom is described by a curve characterizing the sound pressure level from a point source with a known sound power level, and with steady emission and omnidirectional sound radiation as a

29、function of the distance from the source. This International Standard specifies a method for the determination of that spatial sound distribution curve, and for the derivation of two characteristics (rate of spatial decay of sound pressure levels per distance doubling and excess of sound pressure le

30、vel) for the room in question. Data obtained using this International Standard are of use for the following: acoustical qualification of a room with respect to noise control; determination of appropriate positions of a machine and of work stations in a room; assessment of the necessity to increase the sound absorption in the room; qualitative estimation of the potential performance of screens installed in the room; calculation of the noise-immission levels to be expected when machines with known emission are operated at specified positions in the room. ENISO14257:2001 ENISO14257:2001