IEC_TS_60318-7-2011.pdf

IEC/TS 60318-7 Edition 1.0 2011-02 TECHNICAL SPECIFICATION Electroacoustics Simulators of human head and ear Part 7:Head and torso simulator for the measurement of hearing aids IEC/TS 60318-7:2011(E)Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-28-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2011 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 permission 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 further 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 Comit 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 3,rue de Varemb CH-1211 Geneva 20 Switzerland Email:inmailiec.ch Web:www.iec.ch 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.Catalogue of IEC publications:www.iec.ch/searchpub The IEC on-line Catalogue enables you to search by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,withdrawn and replaced publications.IEC Just Published:www.iec.ch/online_news/justpub Stay up to date on all new IEC publications.Just Published details twice a month all new publications released.Available on-line and also by email.Electropedia:www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions in English and French,with equivalent terms in additional languages.Also known as the International Electrotechnical Vocabulary online.Customer Service Centre:www.iec.ch/webstore/custserv If you wish to give us your feedback on this publication or need further assistance,please visit the Customer Service Centre FAQ or contact us:Email:csciec.ch Tel.:+41 22 919 02 11 Fax:+41 22 919 03 00 Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-28-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.IEC/TS 60318-7Edition 1.0 2011-02TECHNICAL SPECIFICATION Electroacoustics Simulators of human head and ear Part 7:Head and torso simulator for the measurement of hearing aids INTERNATIONAL ELECTROTECHNICAL COMMISSION VICS 17.140.50 PRICE CODEISBN 978-2-88912-379-7 Registered trademark of the International Electrotechnical Commission Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-28-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.2 TS 60318-7 IEC:2011(E)CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope.6 2 Normative references.6 3 Terms and definitions.6 4 Construction.11 4.1 General.11 4.2 Geometrical dimensions of the manikin.11 4.2.1 Torso.11 4.2.2 Head.18 4.2.3 Pinna.24 4.2.4 Ear simulator.28 4.2.5 Materials.29 4.2.6 Markings.29 4.2.7 Tolerances.29 4.3 Acoustical characteristics of the manikin.29 4.3.1 Free field frequency response.29 4.3.2 Tolerances.29 4.3.3 Openings.30 5 Calibration.30 5.1 Atmospheric reference conditions.30 5.2 Calibration method.30 5.2.1 General.30 5.2.2 Test space and measurement equipment.30 5.2.3 Measurement of sound pressure level.31 5.2.4 Alignment of manikin azimuth and elevation.31 5.2.5 Test for sound leakage.31 6 Maximum permitted expanded uncertainty of measurements.32 Annex A(informative)Ear canal sound pressure ratio.34 Bibliography.35 Figure 1 Manikin geometrical references.9 Figure 2 Coordinate scheme for azimuth and elevation angles.10 Figure 3 Illustration of manikin head and torso dimensions.12 Figure 4 Cross-sections of torso(tolerance 4 mm).17 Figure 5 Cross-sections of head(tolerance 2,5 mm).23 Figure 6 Illustration of manikin pinna dimensions.24 Figure 7 Cross-sections of right pinna(tolerance 1,5 mm).28 Table 1 Head and torso dimensions for the manikin and average human data.12 Table 2 Pinna dimensions for the manikin.24 Table 3 Free field frequency response of the manikin.32 Tab