1、BRITISH STANDARDBS EN ISO 15186-3:2010Acoustics Measurement of sound insulation in buildings and of building elements using sound intensity Part 3: Laboratory measurements at low frequenciesICS 91.120.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3
2、g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 15/03/2011 03:12, Uncontrolled Copy, (c) BSINational forewordThis British Standard is the UK implementation of EN ISO 15186-3:2010. It is iden
3、tical to ISO 15186-3:2002. Itsupersedes BS ISO 15186-3:2002 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee EH/1/6, Building acoustics.A list of organizations represented on this committee can be obtained on request to its secretary.This publication do
4、es not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN ISO 15186-3:2010This British Standard, having been prepared under the direction of the Health
5、 and Environment Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on22 November 2002 BSI 2010Amendments/corrigenda issued since publicationAmd. No. Date Comments 30 November 2010This corrigendum renumbers BS ISO 15186-3:2002 as BS
6、 EN ISO 15186-3:2010ISBN 978 0 580 71779 6Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 15/03/2011 03:12, Uncontrolled Copy, (c) BSIEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 15186-3 September 2010 ICS 91.120.20 English Version Acoustics - Measurement of sound insulation in bu
7、ildings and of building elements using sound intensity - Part 3: Laboratory measurements at low frequencies (ISO 15186-3:2002) Acoustique - Mesurage par intensit de lisolation acoustique des immeubles et des lments de construction - Partie 3: Mesurages en laboratoire de basses frquences (ISO 15186-3
8、:2002) Akustik - Bestimmung der Schalldmmung in Gebuden und von Bauteilen aus Schallintensittsmessungen - Teil 3: Messungen bei niedrigen Frequenzen im Prfstand (ISO 15186-3:2002) This European Standard was approved by CEN on 5 August 2010. CEN members are bound to comply with the CEN/CENELEC Intern
9、al Regulations 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 membe
10、r. This 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 member
11、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
12、weden, 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 Member
13、s. Ref. No. EN ISO 15186-3:2010: ELicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 15/03/2011 03:12, Uncontrolled Copy, (c) BSIForeword The text of ISO 15186-3:2002 has been prepared by Technical Committee ISO/TC 43 “Acoustics” of the International Organization for Standardization (ISO) and ha
14、s been taken over as EN ISO 15186-3:2010 by Technical Committee CEN/TC 126 “Acoustic properties 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
15、endorsement, at the latest by March 2011, and conflicting national standards shall be withdrawn at the latest by March 2011. 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 iden
16、tifying any or all such patent rights. 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Ger
17、many, 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 15186-3:2002 has been approved by CEN as a EN ISO 15186-3:20
18、10 without any modification. BS EN ISO 15186-3:2010EN ISO 15186-3:2010 (E)Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 15/03/2011 03:12, Uncontrolled Copy, (c) BSIiiiContents Page1 Scope . 11.1 General 11.2 Precision 12 Normative references . 13 Terms and definitions 24 Instrumentation . 4
19、4.1 General 44.2 Calibration . 55 Test arrangement 55.1 Rooms . 55.2 Test specimen 55.3 Mounting conditions . 66 Test procedure 66.1 General 66.2 Generation of sound field 66.3 Measurement of the average sound pressure level over the surface of the test specimenin the source room . 66.4 Measurement
20、of the average sound intensity level on the receiving side 76.5 Background noise 96.6 Frequency range of measurements . 107 Expression of results 108 Test report 10AnnexesA Qualification 11B Estimated precision of the method 13Bibliography. 14BS EN ISO 15186-3:2010EN ISO 15186-3:2010 (E)Licensed Cop
21、y: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 15/03/2011 03:12, Uncontrolled Copy, (c) BSIThis page deliberately set blankLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 15/03/2011 03:12, Uncontrolled Copy, (c) BSI ISO 2002 r llAithgs reservde 1Acoustics Measurement of sound insulation in buildi
22、ngs and of building elements using sound intensity Part 3:Laboratory measurements at low frequencies1 Scope1.1 GeneralThis part of ISO 15186 specifies a sound intensity method to determine the sound reduction index and the element-normalized level difference of building elements at low frequencies.
23、This method has significantly betterreproducibility in a typical test facility than those of ISO 140-3, ISO 140-10 and ISO 15186-1. The results are moreindependent of the room dimensions of the laboratory and closer to values that would be measured between roomsof volume greater than . This part of
24、ISO 15186 is applicable in the frequency range to but ismainly intended for the frequency range to .NOTE For elements faced with thick, porous absorbers, the recommended frequency range is to .The main differences between the methods of ISO 15186-1 and ISO 15186-3 are that in ISO 15186-3a) the sound
25、 pressure level of the source room is measured close to the surface of the test specimen, andb) the surface opposite the test specimen in the receiving room is highly absorbing and converts the roomacoustically into a duct with several propagating cross-modes above the lowest cut-on frequency.The re
26、sults found by the method of ISO 15186-3 can be combined with those of ISO 140-3 and ISO 15186-1 toproduce data in the frequency range to 1.2 PrecisionThe reproducibility of this intensity method is, for all frequencies, estimated to be equal to or better than that foundwith the method of ISO 140-3
27、at .Some comparisons of data obtained with the methods of this part of ISO 15186 and ISO 140-3 are given in annex B.2 Normative referencesThe following normative documents contain provisions which, through reference in this text, constitute provisions ofthis part of ISO 15186. For dated references,
28、subsequent amendments to, or revisions of, any of these publicationsdo not apply. However, parties to agreements based on this part of ISO 15186 are encouraged to investigate thepossibility of applying the most recent editions of the normative documents indicated below. For undated references,the la
29、test edition of the normative document referred to applies. Members of ISO and IEC maintain registers ofcurrently valid International Standards.ISO 140-1, Acoustics Measurement of sound insulation in buildings and of building elements Part 1:Requirements for laboratory test facilities with suppresse
30、d flanking transmissionISO 140-3:1995, Acoustics Measurement of sound insulation in buildings and of building elements Part 3:Laboratory measurements of airborne sound insulation of building elements300 m350 Hz 160 Hz50 Hz 80 Hz50 Hz 80 Hz50 Hz 5 000 Hz.100 Hz1BS EN ISO 15186-3:2010EN ISO 15186-3:20
31、10 (E)Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 15/03/2011 03:12, Uncontrolled Copy, (c) BSI2 ISO 2002 Ar llithgr seresvdeISO 140-10, Acoustics Measurement of sound insulation in buildings and of building elements Part 10:Laboratory measurement of airborne sound insulation of small buil
32、ding elementsISO 9614-1:1993, Acoustics Determination of sound power levels of noise sources using sound intensity Part 1: Measurement at discrete pointsIEC 60942, Electroacoustics Sound calibratorsIEC 61043:1993, Electroacoustics Instruments for the measurement of sound intensity Measurement with p
33、airsof pressure sensing microphones3 Terms and definitionsFor the purposes of this part of ISO 15186, the following terms and definitions apply.3.1 average sound pressure level on a test surfaceten times the common logarithm of the ratio of the surface and the time average of the sound pressure squa
34、red to thesquare of the reference sound pressureNOTE The surface average is taken over the entire test surface in the source room, including reflecting effects from the testspecimen.3.2 sound reduction indexten times the common logarithm of the ratio of the sound power, , incident on the test specim
35、en to the soundpower, transmitted through the specimen(1)NOTE The expression “sound transmission loss” is also in use.3.3 sound intensitytime-averaged rate of flow of sound energy per unit area oriented normal to the local particle velocityNOTE This is a vectorial quantity which is equal to(2)wherei
36、s the instantaneous sound pressure at a point, in pascals;is the instantaneous particle velocity at the same point, in metres per second;is the averaging time, in seconds.LpSRW1W2R= 10 lgparenleftbiggW1W2parenrightbiggdBII =1TTintegraldisplay0p(t) u (t) dtWm2p(t)u (t)T2BS EN ISO 15186-3:2010EN ISO 1
37、5186-3:2010 (E)Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 15/03/2011 03:12, Uncontrolled Copy, (c) BSI ISO 2002 r llAithgs reservde 33.4 normal sound intensitycomponent of the sound intensity in the direction normal to a measurement surface defined by the unit normal vector(3)where is th
38、e unit normal vector directed out of the volume enclosed by the measurement surface3.5 normal sound intensity levelten times the common logarithm of the ratio of the unsigned value of the normal sound intensity to the referenceintensity (4)where 3.6 surface-pressure intensity indicatordifference bet
39、ween the sound pressure level, , and the normal sound intensity level, , on the measurementsurface, both being time and surface averaged(5)NOTE This notation is according to ISO 9614-2. In ISO 9614-1 the notation is used.3.7 residual-pressure intensity indexdifference between the indicated sound pre
40、ssure level, , and the indicated sound intensity level, , when theintensity probe is placed and oriented in a sound field such that the sound intensity is zeroNOTE 1 It is expressed in decibels.NOTE 2 Details for determining are given in IEC 61043:(6)3.8 intensity sound reduction indexfor one source
41、 room and one receiving room with an absorbing back wall, index defined by(7)whereis the average sound pressure level over the surface of the test specimen in the source room, in decibels;is the average normal sound intensity level over the measurement surface in the receiving room, indecibels;InnIn
42、=I nnLInI0LIn= 10 lgparenleftbiggInI0parenrightbiggdBI0= 1012W/m2FpILpLInFpI= (LpLIn)dBF2pI0LpLIpI0pI0= (LpLI)dBRIRI=LpS 9 bracketleftbiggLIn+ 10 lgparenleftbiggSmSparenrightbiggbracketrightbiggdBLpSLIn3BS EN ISO 15186-3:2010EN ISO 15186-3:2010 (E)Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARD
43、S, 15/03/2011 03:12, Uncontrolled Copy, (c) BSI4 ISO 2002 Ar llithgr seresvdeis the total area of the measurement surface(s), in square metres;is the area of the test specimen under test, in square metres.NOTE Equation (7) is valid for a test specimen with a reflecting surface in the source room. It
44、 will also work satisfactorily formoderately absorbing surfaces (e.g. surfaces covered with thick porous absorbers). For to thickabsorbers, it is recommended to restrict the frequency range to to . For even thicker absorbers, the equation is nolonger valid.3.9 intensity element normalized level diff
45、erencedifference given by(8)whereis the average sound pressure level over the surface of the test specimen in the source room, in decibels;is the average normal sound intensity level over the measurement surface in the receiving room, indecibels;is the total area of the measurement surface(s), in sq
46、uare metres;is the number of small building element units installed within the measurement surface.NOTE Equation (8) is valid for a test specimen with a reflecting surface in the source room. It will also work satisfactorily formoderately absorbing surfaces (e.g. surfaces covered with thick porous a
47、bsorbers). For to thickabsorbers, it is recommended to restrict the frequency range to to . For even thicker absorbers, the equation is nolonger valid.3.10 measurement surfacesurface totally enclosing the test specimen on the receiving side, scanned or sampled by the probe during themeasurements3.11
48、 measurement distancedistance between the measurement surface and the specimen in a direction normal to the specimen3.12 measurement sub-areapart of the measurement surface being measured with the intensity probe, using one continuous scan or discretepositions4 Instrumentation4.1 GeneralThe intensit
49、y measuring instrumentation shall be capable of measuring intensity levels with reference to in decibels in one-third-octave bands. The intensity shall be measured in real time when the scanning procedure isused. The instrument, including the probe, shall comply with IEC 61043:1993, class 1.SmS100 mm 100 mm 200 mm50 Hz 80 HzDIn,eDIn,e=LpS 9 bracketleftbiggLIn 10 lgparenleftbiggA0Smparenrightbigg 10 lg NbracketrightbiggLpSLInA0= 10 m2SmN100 mm 100 mm 200 mm50 Hz 80 Hzd1012W/m24BS EN I
