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1、 Reference number ISO 16032:2004(E) ISO 2004 INTERNATIONAL STANDARD ISO 16032 First edition 2004-09-15 Acoustics Measurement of sound pressure level from service equipment in buildings Engineering method Acoustique Mesurage du niveau de pression acoustique des quipements techniques dans les btiments
2、 Mthode dexpertise ISO 16032:2004(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing th
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5、at at the address given below. ISO 2004 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address
6、 below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2004 All rights reserved ISO 16032:2004(E) ISO 2004 All rights reser
7、ved iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for w
8、hich 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 part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all
9、 matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are c
10、irculated 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 document may be the subject of patent rights. ISO shall not be held resp
11、onsible for identifying any or all such patent rights. ISO 16032 was prepared by the European Committee for Standardization (CEN) in collaboration with Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 2, Building acoustics, in accordance with the Agreement on technical cooperation between I
12、SO and CEN (Vienna Agreement). Throughout the text of this document, read “.this European Standard.” to mean “.this International Standard.”. ISO 16032:2004(E) iv ISO 2004 All rights reserved Contents page Forewordv Introductionvi 1 Scope 1 2 Normative references 1 3 Terms and definitions .1 4 Instr
13、umentation4 5 Test method General 5 6 Measurement procedure.6 7 Measurement of reverberation time.8 8 Correction for background noise.8 9 Precision.9 10 Test report 9 Annex A (normative) A-weighting and C-weighting correction value11 Annex B (normative) Operating conditions and operating cycles for
14、measuring the maximum sound pressure level and the equivalent continuous sound pressure level 12 Bibliography19 ISO 16032:2004(E) ISO 2004 All rights reserved v Foreword This document (EN ISO 16032:2004) has been prepared by Technical Committee CEN/TC 126 “Acoustic properties of building products an
15、d of buildings”, the secretariat of which is held by AFNOR, in collaboration with Technical Committee ISO/TC 43 “Acoustics”. 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 March 2005, and conflic
16、ting national standards shall be withdrawn at the latest by March 2005. This document includes a Bibliography. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, C
17、zech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. ISO 16032:2004(E) vi ISO 2004 All rights reserved Intro
18、duction This document specifies the engineering method for the measurement of sound pressure level from service equipment in buildings. For use of this document measurements are performed under specified operation conditions and operating cycles. Such conditions are given in Annex B. The operating c
19、onditions and operating cycles given in Annex B are only used if they are not opposed to national requirements and regulations. ISO 16032:2004(E) ISO 2004 All rights reserved 1 1 Scope This document specifies methods for measuring the sound pressure level from service equipment in buildings installe
20、d to building structures. This document covers specifically measurements of sanitary installations, mechanical ventilation, heating and cooling service equipment, lifts, rubbish chutes, boilers, blowers, pumps and other auxiliary service equipment, and motor driven car park doors, but can also be ap
21、plied to other equipment attached to or installed in buildings. The methods are suitable for rooms with volumes of approximately 300 m3 or less in e.g. dwellings, hotels, schools, offices and hospitals. The standard is not in general intended for measurements in large auditoria and concert halls. Ho
22、wever, the operating conditions and operating cycles in Annex B can be used in such cases. The service equipment sound pressure level is determined as the maximum A- weighted and optionally C- weighted sound pressure level occurring during a specified operation cycle of the service equipment under t
23、est, or as the equivalent continuous sound pressure level determined with a specified integration time. A-weighted and C- weighted values are calculated from octave-band measurements. 2 Normative references The following referenced documents are indispensable for the application of this document. Fo
24、r dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 60942, Electroacoustics Sound calibrators (IEC 60942:2003). EN 61260, Electroacoustics Octave-band and fractional-octave-band filters (IEC
25、61260:1995). EN 61672-1, Electroacoustics - Sound level meters - Part 1: Specifications (IEC 61672-1:2002). EN 61672-2, Electroacoustics - Sound level meters - Part 2: Pattern evaluation tests (IEC 61672-2:2003). EN ISO 3382, Acoustics - Measurement of the reverberation time of rooms with reference
26、to other acoustical parameters (ISO 3382:1997). 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 sound pressure level L ten times the logarithm to the base 10 of the ratio of the square of the sound pressure, p2(t), to the square of the refere
27、nce sound pressure 2 0 p, measured with a particular time weighting and a particular frequency weighting, selected from those defined in EN 61672-1. It is expressed in decibels. The reference sound pressure is 20 Pa ISO 16032:2004(E) 2 ISO 2004 All rights reserved 3.2 average sound pressure level L
28、n 10 lg 10 = n 1i 1 , 0 i = L L dB (1) where Li is the sound pressure level at different microphone positions, in decibels, to be averaged 3.3 A- weighted sound pressure level calculated from octave-band values in the frequency range 63 Hz to 8 000 Hz LA dB 10 lg 10 = )0,1( n 1=i A iiAL L + (2) wher
29、e Li is the sound pressure level in octave-band i, and Ai is the A-weighting correction for octave-band i (see Annex A). The value of Li depends on the measurements, but can be all the parameters of 3.6 3.4 C- weighted sound pressure level calculated from octave-band values in the frequency range 31
30、,5 Hz to 8 000 Hz LC 10 lg 10 = )0,1( =1 dB ii n i C CL L + (3) where Li is the sound pressure level in octave-band i, and Ci is the C-weighting correction for octave-band i (see Annex A). The value of Li depends on the measurements, but can be all the parameters of 3.6 ISO 16032:2004(E) ISO 2004 Al
31、l rights reserved 3 3.5 sound exposure level LE the sound exposure level of a sound event is given by the formula: dB o o E t p tp t L d )( 1 lg 10 = 2 2 t t 2 1 (4) where p(t) is the instantaneous sound pressure in Pascals; t2 - t1 is a stated time interval long enough to encompass all significant
32、sound of a stated event, in seconds; po is the reference sound pressure (20 Pa); to is the reference duration (to = 1 s) 3.6 service equipment sound pressure level in octave-bands in the frequency range 31,5 Hz to 8 000 Hz in the following subclauses 3.6.1 to 3.6.9 are defined the octave-band values
33、 which can be measured according to this document. See also Clause 5, Table 1 3.6.1 LS max maximum sound pressure level in octave-bands determined with time weighting “S” 3.6.2 LS max, nT maximum sound pressure level in octave-bands determined with time weighting “S” and standardized to a reverberat
34、ion time of 0,5 s (3.8, equation (5) 3.6.3 LS max, n maximum sound pressure level in octave-bands determined with time weighting “S” and normalized to an equivalent sound absorption area of 10 m2 (3.8, equation (6) 3.6.4 LF max maximum sound pressure level in octave-bands determined with time weight
35、ing “F” 3.6.5 LF max, nT maximum sound pressure level in octave-bands determined with time weighting “F” and standardized to a reverberation time of 0,5 s (3.8, equation (5) 3.6.6 LF max, n maximum sound pressure level in octave-bands determined with time weighting “F” and normalized to an equivalen
36、t sound absorption area of 10 m2 (3.8, equation (6) 3.6.7 Leq equivalent continuous sound pressure level in octave-bands ISO 16032:2004(E) 4 ISO 2004 All rights reserved 3.6.8 Leq, nT equivalent continuous sound pressure level in octave-bands standardized to a reverberation time of 0,5 s (3.8, equat
37、ion (5) 3.6.9 Leq, n equivalent continuous sound pressure level in octave-bands normalized to an equivalent sound absorption area of 10 m2 (3.8, equation (6) 3.7 reverberation time T time that would be required for the sound pressure level to decrease by 60 dB after the sound source has stopped. It
38、is expressed in seconds 3.8 standardized/normalized sound pressure level the measured sound pressure levels in octave-bands can be standardized to a reverberation time of 0,5 s or normalized to an equivalent sound absorption area of 10 m2. The equations (5) and (6), respectively, are used dB 0 nT T
39、T L L lg 10 - = (5) where L can be LS max, LF max, Leq; T is the measured reverberation time in seconds; T0 = 0,5 s V T A L L 0,16 lg 10 - = 0 n (6) where L can be LS max, LF max, Leq; T is the measured reverberation time in seconds; V is the room volume in cubic metres; A0 is the reference equivale
40、nt sound absorption area in square metres; A0 = 10 m2 0,16 has the unit m s . 4 Instrumentation Measurement of the maximum sound pressure level according to this document implies the use of an octave-band real-time frequency analyser. The analyser shall be able to read values of all octave-band soun
41、d pressure levels at the time when the maximum A-weighted or C-weighted sound pressure level occurs (during a specified operating cycle of the service equipment under test). ISO 16032:2004(E) ISO 2004 All rights reserved 5 NOTE It is important to ensure that the equipment used according to this docu
42、ment fulfils the requirement stated above. The most common analysers used for building acoustic measurements include this feature. The instrumentation system, including the microphone and cable, shall meet the requirements for a class 1 instrument specified in EN 61672-1. For measurements in octave-
43、bands, the filters shall meet the requirements for class 1 filters specified in EN 61260. At the beginning and at the end of the measurements verify the sensitivity of the instrumentation with a sound calibrator class 1 according to EN 60942. 5 Test method General The service equipment sound pressur
44、e level is measured in octave-bands in the frequency range 31,5 Hz/63 Hz to 8 000 Hz as the linear (unweighted) spectrum corresponding to the maximum A-weighted or C-weighted sound pressure level occurring during a specified operating cycle of the service equipment under test. In order to measure th
45、e service equipment sound pressure level a parallel time dependent recording of the A-weighted or C-weighted sound pressure level and the sound pressure levels in octave-bands shall be made (multispectral recording). For evaluation of the equipment sound pressure level take the octave band spectrum
46、at that time when the maximum A-weighted or C-weighted sound pressure level occurs. Time weighting “S” or “F” shall be used. Alternatively or additionally the equivalent continuous sound pressure level can be determined with a specified integration time. The octave-band results are corrected for bac
47、kground noise and - if required - standardized to a reverberation time of 0,5 s or normalized to an equivalent sound absorption area of 10 m2. Finally the A-weighted and C-weighted sound pressure levels are calculated from the corrected octave-band results. A-weighted and C-weighted values shall alw
48、ays be calculated from octave-band results, also in situations where standardization or normalization is not carried out. The single number quantities which can be determined according to this document are given in Table 1 (calculated from the octave-band values defined in 3.6.1 to 3.6.9). The notat
49、ion in the table shall be used when reporting measurement results. The different quantities can be combined according to e.g. requirements in national building code regulations. ISO 16032:2004(E) 6 ISO 2004 All rights reserved Table 1 Single number quantities A-weighted value (calculated from octave-band values in the frequency range 63 Hz to 8 000 Hz) C-weighted value (calculated from octave-band values in the frequency range 31,5 Hz to 8 000 Hz) Maximum s