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    IEC TS 60318-7-2017 Electroacoustics - Simulators of human head and ear - Part 7 Head and torso simulator for the measurement of air-conduction hearing aids《电声学.人类头部和耳朵的模拟器.第7部分 空气传导助听器测量用听觉的头部和躯.pdf

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    IEC TS 60318-7-2017 Electroacoustics - Simulators of human head and ear - Part 7 Head and torso simulator for the measurement of air-conduction hearing aids《电声学.人类头部和耳朵的模拟器.第7部分 空气传导助听器测量用听觉的头部和躯.pdf

    1、 IEC TS 60318-7 Edition 2.0 2017-04 TECHNICAL SPECIFICATION Electroacoustics Simulators of human head and ear Part 7: Head and torso simulator for the measurement of air-conduction hearing aids IEC TS 60318-7:2017-04(en) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2017 IEC, Genev

    2、a, 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 permission in writing from either IEC or IECs member National Committee in th

    3、e 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 further information. IEC Central Office Tel.: +41 22 919 02 11 3, rue d

    4、e 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 related technologies. About I

    5、EC 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. IEC Catalogue - webstore.iec.ch/catalogue The stand-alone application for consulting the enti

    6、re bibliographical information on IEC International Standards, Technical Specifications, Technical Reports and other documents. Available for PC, Mac OS, Android Tablets and iPad. IEC publications search - www.iec.ch/searchpub The advanced search enables to find IEC publications by a variety of crit

    7、eria (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 It also gives information on projects, replaced and withdrawn publications.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 Published details all new publications released. Available online and

    8、also once a month by email. Electropedia - www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing 20 000 terms and definitions in English and French, with equivalent terms in 16 additional languages. Also known as the International Electrotechnical Vo

    9、cabulary (IEV) online. IEC Glossary - std.iec.ch/glossary 65 000 electrotechnical terminology entries in English and French extracted from the Terms and Definitions clause of IEC publications issued since 2002. Some entries have been collected from earlier publications of IEC TC 37, 77, 86 and CISPR

    10、. IEC 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. IEC TS 60318-7 Edition 2.0 2017-04 TECHNICAL SPECIFICATION Electroacoustics Simulators of human head and ear

    11、 Part 7: Head and torso simulator for the measurement of air-conduction hearing aids INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 17.140.50 ISBN 978-2-8322-4166-0 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an auth

    12、orized distributor. colour inside 2 IEC 60318-7:2017 IEC 2017 CONTENTS FOREWORD . 4 1 Scope 6 2 Normative references 6 3 Terms and definitions 7 4 Construction 11 4.1 General . 11 4.2 Geometrical dimensions of the manikin . 12 4.2.1 Head and torso 12 4.2.2 Pinna simulators for hearing aid measuremen

    13、ts . 13 4.2.3 Ear canal extension . 14 4.2.4 Ear simulator . 16 4.2.5 Materials . 17 4.3 Acoustical characteristics of the manikin . 17 4.3.1 Free-field frequency response . 17 4.3.2 Diffuse-field frequency response 19 4.3.3 Acceptance intervals . 20 4.3.4 Openings . 20 5 Calibration . 21 5.1 Refere

    14、nce environmental conditions . 21 5.2 Calibration method 21 5.2.1 General . 21 5.2.2 Test signal, test space and measurement equipment . 21 5.2.3 Measurement of sound pressure level 22 5.2.4 Alignment of manikin azimuth and elevation 23 5.2.5 Test for sound leakage 23 6 Marking and instruction manua

    15、l . 23 6.1 Markings of the manikin 23 6.2 Instruction manual 23 7 Maximum permitted uncertainty of measurements . 24 Annex A (informative) Design example of an anatomically shaped manikin 26 Annex B (informative) Design examples of a geometrically shaped manikin . 27 Annex C (informative) Relationsh

    16、ip between tolerance interval, corresponding acceptance interval and the maximum permitted uncertainty of measurement . 29 Annex D (informative) 3D representation of example pinna simulators . 30 D.1 Background. 30 D.2 Scanning technique 30 D.3 Examples of pinna simulator shape . 30 D.4 Verification

    17、 of conformance . 31 Bibliography 32 Figure 1 Manikin geometrical references 10 Figure 2 Coordinate scheme for azimuth and elevation angles . 11 Figure 3 Illustration of manikin head and torso dimensions 12 Figure 4 Illustration of manikin pinna simulator dimensions 15 Figure A.1 Example of an anato

    18、mically shaped manikin . 26 IEC 60318-7:2017 IEC 2017 3 Figure B.1 Example 1 of a geometrically shaped manikin . 27 Figure B.2 Example 2 of a geometrically shaped manikin . 28 Figure C.1 Relationship between tolerance interval, corresponding acceptance interval and the maximum permitted uncertainty

    19、of measurement . 29 Figure D.1 (Embedded 3D PDFs) Examples of a pinna simulator 31 Table 1 Manikin head and torso dimensions . 13 Table 2 Dimensions of the pinna simulator and the cylindrical ear canal extension of the manikin . 16 Table 3 Dimensions of the pinna simulator and the tapered ear canal

    20、extension of the manikin . 16 Table 4 Free-field frequency response of the manikin for an azimuth angle of 0 (right ear) 18 Table 5 Free-field frequency responses of the manikin for azimuth angles of 90, 180 and 270 (right ear) 19 Table 6 Diffuse-field frequency response of the manikin (right ear) 2

    21、0 Table 7 Maximum permitted uncertainty U maxfor type approval measurements 25 4 IEC 60318-7:2017 IEC 2017 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTROACOUSTICS SIMULATORS OF HUMAN HEAD AND EAR Part 7: Head and torso simulator for the measurement of air-conduction hearing aids FOREWORD 1) The

    22、 International Electrotechnical Commission (IEC) is 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

    23、 electronic fields. To this end and in addition to 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 com

    24、mittees; any IEC National Committee interested in the 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

    25、for Standardization (ISO) in accordance with conditions 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 committ

    26、ee has representation from all interested IEC National 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 a

    27、ccurate, IEC cannot be held responsible for the way 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 reg

    28、ional publications. Any divergence between any IEC Publication 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, i

    29、n some areas, access to IEC marks of conformity. IEC 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 age

    30、nts including individual experts and members of its 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,

    31、 or reliance upon, this IEC Publication or any other 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

    32、of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. The main task of IEC technical committees is to prepare International Standards. In exceptional circumstances, a technical committee may propo

    33、se the publication of a technical specification when the required support cannot be obtained for the publication of an International Standard, despite repeated efforts, or the subject is still under technical development or where, for any other reason, there is the future but no immediate possibilit

    34、y of an agreement on an International Standard. Technical specifications are subject to review within three years of publication to decide whether they can be transformed into International Standards. IEC TS 60318-7, which is a Technical Specification, has been prepared by IEC technical committee 29

    35、: Electroacoustics. IEC 60318-7:2017 IEC 2017 5 This publication contains attached files in the form of 3D PDF files. These files are intended to be used as a complement and do not form an integral part of the publication. This second edition cancels and replaces the first edition published in 2011.

    36、 This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) the document is based on the designs of three different commonly used types of manikins; b) the cross sections of the head and torso and pinna si

    37、mulators of the previous edition are replaced by maximum and minimum values of their geometric dimensions; c) the diffuse field frequency response of the manikin is added; d) the usable frequency range is extended to 100 Hz to 16 000 Hz; e) in addition to the cylindrical ear canal extension a tapere

    38、d ear canal extension is added; f) design examples of one anatomically shaped manikin and of two different geometrically shaped manikins are given in the annexes; g) the relationship between tolerance interval, corresponding acceptance interval and the maximum permitted uncertainty of measurement ar

    39、e given in an annex; h) 3D representations of three different types of pinna simulators are given in an annex. The text of this technical specification is based on the following documents: Enquiry draft Report on voting 29/907/DTS 29/921A/RVDTS Full information on the voting for the approval of this

    40、 technical specification can be found in the report on voting indicated in the above table. This document has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts of IEC 60318 series, published under the general title Electroacoustics Simulators of human head and ear,

    41、can be found on the IEC website. The committee has decided that the contents of this document will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific document. At this date, the document will be reconfirmed, withdr

    42、awn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its cont

    43、ents. Users should therefore print this document using a colour printer. 6 IEC 60318-7:2017 IEC 2017 ELECTROACOUSTICS SIMULATORS OF HUMAN HEAD AND EAR Part 7: Head and torso simulator for the measurement of air-conduction hearing aids 1 Scope This document, which is a Technical Specification, descri

    44、bes a head and torso simulator, or manikin, intended for the measurement of air-conduction hearing aids in the frequency range from 100 Hz to 16 000 Hz. The manikin described in this document is intended for airborne acoustic measurements only. It is not suitable for measurements which depend upon v

    45、ibration transmission paths such as bone conduction, or for measurements requiring the simulation of bone or tissue. This document specifies the manikin in terms of both its geometrical dimensions and its acoustical properties. Only manikins compliant with both sets of specifications are in conforma

    46、nce with this document. WARNING It is acknowledged that devices conforming to this document are used as the basis for applications extending beyond this scope, for example the measurement of sound sources close to the ear or of hearing protection devices. In such cases, it is recommended that any ne

    47、cessary design variations are documented, and that a statistical analysis of the measurement data is carried out to determine the level of repeatability that can be achieved. It will also be necessary to assess the relevance of the measurements made with the head and torso simulator to the applicati

    48、on in question. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced doc

    49、ument (including any amendments) applies. IEC 60118-8, Electroacoustics Hearing aids Part 8: Methods of measurement of performance characteristics of hearing aids under simulated in situ working conditions IEC 60318-4, Electroacoustics Simulators of human head and ear Part 4: Occluded-ear simulator for the measurement of earphones coupled to the ear by means of ear inserts IEC 61260-1, Electroacoustics Octave-band and fractional-octave-band filters Part


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