欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    IEC 62585-2012 Electroacoustics - Methods to determine corrections to obtain the free-field response of a sound level meter《电声学.声度表的自由场响应校正测定法》.pdf

    • 资源ID:1237613       资源大小:1.34MB        全文页数:86页
    • 资源格式: PDF        下载积分:10000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要10000积分(如需开发票,请勿充值!)
    邮箱/手机:
    温馨提示:
    如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    支付方式: 支付宝扫码支付    微信扫码支付   
    验证码:   换一换

    加入VIP,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。

    IEC 62585-2012 Electroacoustics - Methods to determine corrections to obtain the free-field response of a sound level meter《电声学.声度表的自由场响应校正测定法》.pdf

    1、 IEC 62585 Edition 1.0 2012-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Electroacoustics Methods to determine corrections to obtain the free-field response of a sound level meter lectroacoustique Mthodes de dtermination de corrections pour obtenir la rponse en champ libre dun sonomtre IEC62585:20

    2、12 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2012 IEC, Geneva, Switzerland 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 permissio

    3、n in writing from either IEC or IECs member National Committee in the country of the requester. If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local IEC member National Committee for fur

    4、ther information. Droits de reproduction rservs. Sauf indication contraire, aucune partie de cette publication ne peut tre reproduite ni utilise sous quelque forme que ce soit et par aucun procd, lectronique ou mcanique, y compris la photocopie et les microfilms, sans laccord crit de la CEI ou du Co

    5、mit national de la CEI du pays du demandeur. Si vous avez des questions sur le copyright de la CEI ou si vous dsirez obtenir des droits supplmentaires sur cette publication, utilisez les coordonnes ci-aprs ou contactez le Comit national de la CEI de votre pays de rsidence. IEC Central Office Tel.: +

    6、41 22 919 02 11 3, rue de Varemb Fax: +41 22 919 03 00 CH-1211 Geneva 20 infoiec.ch Switzerland www.iec.ch About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, electronic and relat

    7、ed technologies. About IEC publications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latest edition, a corrigenda or an amendment might have been published. Useful links: IEC publications search - www.iec.ch/searchpub The adva

    8、nced search enables you to find IEC publications by a variety of criteria (reference number, text, technical committee,). It also gives information on projects, replaced and withdrawn publications. IEC Just Published - webstore.iec.ch/justpublished Stay up to date on all new IEC publications. Just P

    9、ublished details all new publications released. Available on-line and also once a month by email. Electropedia - www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 30 000 terms and definitions in English and French, with equivalent terms

    10、 in additional languages. Also known as the International Electrotechnical Vocabulary (IEV) on-line. Customer Service Centre - webstore.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: csciec.ch. A propos de l

    11、a CEI La Commission Electrotechnique Internationale (CEI) est la premire organisation mondiale qui labore et publie des Normes internationales pour tout ce qui a trait llectricit, llectronique et aux technologies apparentes. A propos des publications CEI Le contenu technique des publications de la C

    12、EI est constamment revu. Veuillez vous assurer que vous possdez ldition la plus rcente, un corrigendum ou amendement peut avoir t publi. Liens utiles: Recherche de publications CEI - www.iec.ch/searchpub La recherche avance vous permet de trouver des publications CEI en utilisant diffrents critres (

    13、numro de rfrence, texte, comit dtudes,). Elle donne aussi des informations sur les projets et les publications remplaces ou retires. Just Published CEI - webstore.iec.ch/justpublished Restez inform sur les nouvelles publications de la CEI. Just Published dtaille les nouvelles publications parues. Di

    14、sponible en ligne et aussi une fois par mois par email. Electropedia - www.electropedia.org Le premier dictionnaire en ligne au monde de termes lectroniques et lectriques. Il contient plus de 30 000 termes et dfinitions en anglais et en franais, ainsi que les termes quivalents dans les langues addit

    15、ionnelles. Egalement appel Vocabulaire Electrotechnique International (VEI) en ligne. Service Clients - webstore.iec.ch/csc Si vous dsirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 62585 Edition 1.0 2012-07 INTERNATIONAL STANDARD

    16、NORME INTERNATIONALE Electroacoustics Methods to determine corrections to obtain the free-field response of a sound level meter lectroacoustique Mthodes de dtermination de corrections pour obtenir la rponse en champ libre dun sonomtre INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHN

    17、IQUE INTERNATIONALE X ICS 17.140.50 PRICE CODE CODE PRIX ISBN 978-2-83220-290-6 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. At

    18、tention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 62585 IEC:2012 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope . 7 2 Normative references . 8 3 Terms and definitions . 8 4 Reference environmental conditions . 9 5 Uncertainties of measurement 9 6 Genera

    19、l requirements for measurement of adjustment value and corrections 10 7 Submission and inspection . 12 8 Determination of the adjustment value at the calibration check frequency . 12 9 Determination of corrections for the typical effects of reflections from the case of the sound level meter and diff

    20、raction of sound around the microphone . 13 10 Determination of corrections for the deviation of the microphone free-field frequency response from a uniform frequency response . 13 11 Determination of corrections for the use of windscreens and similar accessories 14 12 Determination of corrections o

    21、ver a range of frequencies when a sound calibrator is recommended for use by the sound level meter manufacturer . 14 13 Determination of corrections over a range of frequencies when a comparison coupler is recommended for use by the sound level meter manufacturer 15 14 Determination of corrections o

    22、ver a range of frequencies when an electrostatic actuator is recommended for use by the sound level meter manufacturer . 16 15 Documentation . 16 Annex A (normative) Calibration check frequency Determination of the adjustment value 18 Annex B (normative) Determination of the effects of reflections f

    23、rom the case of the sound level meter and diffraction of sound around the microphone . 20 Annex C (normative) Determination of the effects of the use of windscreens and similar accessories . 21 Annex D (informative) Determination of corrections for use with sound calibrators to determine equivalent

    24、free-field response at all frequencies of interest 22 Annex E (informative) Determination of corrections for use with comparison couplers to determine equivalent free-field frequency response at all frequencies of interest 25 Annex F (informative) Determination of corrections for use with electrosta

    25、tic actuators to determine equivalent free-field frequency response at all frequencies of interest 28 Annex G (informative) Comparison techniques. 31 Annex H (informative) Exact one-twelfth-octave frequencies 34 Annex I (informative) Example calculations of expanded uncertainty of measurement 36 Bib

    26、liography 40 Figure 1 Mounting methods for the sound level meter 11 Figure A.1 Diagrammatic representation of factors for consideration in optimising adjustment value at the calibration check frequency . 19 Figure D.1 Measurement steps using a sound calibrator 22 Figure E.1 Measurement steps using a

    27、 comparison coupler . 25 62585 IEC:2012 3 Figure F.1 Measurement steps using an electrostatic actuator . 28 Table H.1 Exact frequencies for one-twelfth-octave steps over one decade . 35 Table I.1 Description of likely uncertainty components . 37 Table I.2 Uncertainty example for a frequency of 1 kHz

    28、 . 38 Table I.3 Uncertainty example for a frequency of 8 kHz . 39 4 62585 IEC:2012 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTROACOUSTICS METHODS TO DETERMINE CORRECTIONS TO OBTAIN THE FREE-FIELD RESPONSE OF A SOUND LEVEL METER FOREWORD 1) The International Electrotechnical Commission (IEC) is

    29、 a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to

    30、other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in t

    31、he subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditi

    32、ons determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC Nation

    33、al Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way

    34、in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC P

    35、ublication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC

    36、 is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its

    37、technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other

    38、 IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the s

    39、ubject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 62585 has been prepared by IEC technical committee 29: Electroacoustics. The text of this International Standard is based on the following documents: FDIS Report on vo

    40、ting 29/770/FDIS 29/782/RVD Full information on the voting for the approval of this International Standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. 62585 IEC:2012 5 The committee has decide

    41、d that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended.

    42、 6 62585 IEC:2012 INTRODUCTION The performance specification International Standard for sound level meters, IEC 61672-1, requires that at least one model of sound calibrator, conforming to the requirements of IEC 60942 be specified in the instruction manual for checking and maintaining the correct i

    43、ndication on the display of the sound level meter at the calibration check frequency. The sound level meter manufacturer specifies the adjustment value to be applied to obtain the required indication on the display in response to the sound pressure level generated by the sound calibrator, in order t

    44、o optimize performance over the complete frequency range. In addition, various corrections need to be available over a range of frequencies in order for a periodic test of a sound level meter to be performed according to IEC 61672-3. For example, corrections are needed for any effects of the sound l

    45、evel meter case or of accessories such as windscreens on the equivalent free-field sound level. Information on these corrections is also required by users of sound level meters and sound calibrators on a regular basis. Also, a manufacturer producing a sound level meter to the specifications of IEC 6

    46、1672-1, may recommend, in the instruction manual, the use of a sound calibrator, comparison coupler or electrostatic actuator to determine the acoustical response of a sound level meter at various frequencies. In this case the manufacturer is required to provide corrections to obtain equivalent soun

    47、d levels that would be displayed under reference environmental conditions in response to plane progressive sinusoidal waves that are incident from the reference direction at each frequency used for periodic testing. These corrections will either be given in the instruction manual, or the instruction

    48、 manual will state where they can be found. 62585 IEC:2012 7 ELECTROACOUSTICS METHODS TO DETERMINE CORRECTIONS TO OBTAIN THE FREE-FIELD RESPONSE OF A SOUND LEVEL METER 1 Scope This International Standard provides information on the corrections required over a range of frequencies in order for a peri

    49、odic test of a sound level meter to be performed according to IEC 61672-3. These corrections include: corrections for the typical effects of reflections from the case of the sound level meter and diffraction of sound around the microphone; corrections for the deviation of the typical microphone frequency response from a uniform frequency response, where the actual microphone response cannot be measured; corrections


    注意事项

    本文(IEC 62585-2012 Electroacoustics - Methods to determine corrections to obtain the free-field response of a sound level meter《电声学.声度表的自由场响应校正测定法》.pdf)为本站会员(dealItalian200)主动上传,麦多课文档分享仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1 

    收起
    展开