1、 PUBLICLY AVAILABLE SPECIFICATION IEC PAS 62458Pre-Standard First edition2006-01 Sound system equipment Electroacoustical transducers Measurement of large signal parameters Reference number IEC/PAS 62458:2006(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIE
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8、19 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.PUBLICLY AVAILABLE SPECIFICATIONIEC PAS 62458Pre-Standard First edition2006-01 Sound system equipment Electroacoustical transducers Measurement of large sign
9、al parameters PRICE CODE IEC 2006 Copyright-all rights reserved 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 the publisher.International Electrotechnical Commissi
10、on,3,rue de Varemb,PO Box 131,CH-1211 Geneva 20,SwitzerlandTelephone:+41 22 919 02 11 Telefax:+41 22 919 03 00 E-mail:inmailiec.ch Web:www.iec.ch M For price,see current catalogue Commission Electrotechnique InternationaleInternational Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BA
11、NGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 PAS 62458 IEC:2006(E)CONTENTS FOREWORD.3 INTRODUCTION.4 1 Scope.5 2 Normative references.5 3 Terms and definitions.5 4 Test equipment.8 5 Test method.8 6 Test result.8 Annex A(informative)Additional information.11 Bibliog
12、raphy.13 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.PAS 62458 IEC:2006(E)3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ SOUND SYSTEM EQUIPMENT Electroacoustical transducers Measurement of large signal parameters FOREWORD 1)The Inte
13、rnational 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 electron
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