ISO-10847-1997.pdf
《ISO-10847-1997.pdf》由会员分享,可在线阅读,更多相关《ISO-10847-1997.pdf(18页珍藏版)》请在三一文库上搜索。
1、INTERNATIONAL STANDARD IS0 10847 First edition 1997-08-01 Acoustics - In-si;tu determination of insertion loss of outdoor noise barriers of all types Acoustique - DBtermination in situ de la perte par insertion de tous types d kcrans antibruit en milieu extkieur This material is reproduced from IS0
2、documents under International Organization for Standardization (ISO) Copyright License number lHSllCCIl996. Not for resale. No part of these IS0 documents may be reproduced in any form, electronic retrieval system or otherwise, except as allowed in the copyright law of the country of use, or with th
3、e prior written consent of IS0 (Case postale 56,121l Geneva 20, Switzerland, Fax +41 22 734 10 79), IHS or the IS0 Licenser s members. Reference number IS0 10847: I 997(E) Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standard
4、s 1/9972545001 Not for Resale, 04/20/2007 06:36:12 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 10847: 1997(E) Contents Page 1 Scope 1 2 Normative references 1 3 Definitions 2 4 Methods 3 4.1 Direct method 3 4.2 Indirect measurement method 3 5 Instrumentation 4 5.1 S
5、ound level meter and analyzer 4 5.2 Sound calibrator . 4 5.3 Windscreen . 4 5.4 Other instrumentation system 4 5.5 Meteorological equipment . 4 6 Acoustic environment . 4 6.1 General 4 6.2 Terrain profile and ground surface equivalence .5 6.3 Meteorological conditions . 5 6.4 Background noise 7 7 So
6、urces and source equivalence . 8 7.1 Source type . 8 7.2 Source equivalence 8 Q IS0 1997 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 per
7、mission in writing from the publisher. International Organization for Standardization Case postale 56 l CH-1211 Get-t a=rlOOnet; p=iso; o=isoos; s=central Printed in Switzerland ii Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical
8、 Standards 1/9972545001 Not for Resale, 04/20/2007 06:36:12 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 10847: 1997(E) 8 Measurement procedure . 9 8.1 General planning 9 8.2 Determination of barrier insertion loss 10 9 Information to be recorded . 12 9.1 Type of met
9、hod . 12 9.2 Instrumentation 12 9.3 Acoustic environment 12 9.4 Sound source 12 9.5 Barrier to be tested . 12 9.6 Site layout . 12 9.7 Acoustical data . 13 10 Information to be reported 13 . . . III Copyright International Organization for Standardization Provided by IHS under license with ISO Licen
10、see=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:36:12 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 10847:1997(E) 0 IS0 Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS
11、0 member bodies). The work of preparing International Standards is normally carried out through IS0 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, gove
12、rnmental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to th
13、e member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard IS0 10847 was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 1, Noise. iv Copyright International Organization fo
14、r Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:36:12 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD Q IS0 IS0 10847:1997(E) Acoustics - In-situ determination of in
15、sertion loss of outdoor noise barriers of all types 1 Scope This International Standard specifies methods for the determination of insertion loss of outdoor noise barriers intended to shield various kinds of noise sources. It specifies detailed procedures for in-situ measurement of barrier insertion
16、 loss including microphone positions, source conditions and acoustic environments of the measurement sites. This International Standard allows one to measure the insertion loss of a given noise barrier in a given site and including given meteorological conditions. It does not make it possible to com
17、pare insertion toss values of an equivalent barrier on a different site. It can be used for comparing insertion loss values of different types of barriers on a same site and under given meteorological conditions by the direct method. This international Standard gives a method for determining inserti
18、on loss: a) from the level difference before and after the installation of noise barriers and when this is not possible because a barrier has already been installed, b) using an indirect method to estimate the sound pressure levels before installation of the barrier by measurement at another site wh
19、ich has been judged to be equivalent. For equivalent sites, close match is required in source characteristics, microphone locations terrain profiles ground surface characteristics, surrounding artificial structures and meteorological conditions. This International Standard prescribes principles for
20、ensuring that sufficiently equivalent conditions are maintained between “before” and “after” cases to permit certain, reliable and repeatable determination of barrier insertion loss. This International Standard does not cover the determination of the intrinsic acoustic quantities of the barrier, for
21、 example the sound reduction index and the sound absorption coefficient. The equivalent continuous A-weighted sound pressure level, the A-weighted sound exposure level, the octave or one-third-octave band sound pressure level and/or maximum sound pressure level are used as noise descriptors. This In
22、ternational Standard can be used for routine determination of barrier performance or for engineering or diagnostic evaluation. It can be used in situations where the barrier is to be installed or has already been installed. 2 Normative references The following standards contain provisions which, thr
23、ough 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 International Standard are encouraged to investigate the possibility of appl
24、ying the most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IEC 651 :1979, Sound /eve/ meters. IEC 804:1985, hegrating averaging sound level meters. IEC 942:1988, Sound calibrators. IEC 1260: 1995, Hecfroacoust
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ISO 10847 1997
链接地址:https://www.31doc.com/p-3774003.html