1、 IEC 61606-1Edition 2.0 2009-07INTERNATIONAL STANDARD Audio and audiovisual equipment Digital audio parts Basic measurement methods of audio characteristics Part 1:General IEC 61606-1:2009(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUR
2、EAU.THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2009 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 w
3、riting 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 inf
4、ormation.IEC Central Office 3,rue de Varemb CH-1211 Geneva 20 Switzerland Email:inmailiec.ch Web: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
5、 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.?Catalogue of IEC publications:www.iec.ch/searchpub The IEC on-line Catalog
6、ue 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to search by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,withdrawn and replaced publications.?IEC Just Published:www.iec.ch/online_news/justpub Stay up to date on all new IEC publications.Just Published details twice a month
7、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 know
8、n 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
9、 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC 61606-1Edition 2.0 2009-07INTERNATIONAL STANDARD Audio and audiovisual equipment Digital audio parts Basic measurement methods of audio characteristics Part 1:General IN
10、TERNATIONAL ELECTROTECHNICAL COMMISSION UICS 33.160.01 PRICE CODEISBN 2-8318-1051-6 Registered trademark of the International Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 61606-1 IEC:2009(E)CONTENTS FOR
11、EWORD.4 1 Scope.6 2 Normative references.6 3 Terms,definitions,explanations and rated values.7 3.1 Terms and definitions.7 3.2 Explanation of term“jitter”.9 3.3 Rated values.9 4 Measuring conditions.10 4.1 Environmental conditions.10 4.2 Power supply.10 4.2.1 Supply voltage.10 4.2.2 Frequency(ies).1
12、0 4.2.3 High-frequency and harmonic components(or ripples)in the power supply output.10 4.3 Test signal frequencies.10 4.4 Standard setting.11 4.4.1 Standard input conditions for the EUT.11 4.4.2 Standard output conditions for the EUT.12 4.4.3 Standard setting of controls.12 4.5 Preconditioning.12 4
13、.6 Measuring instruments.13 4.6.1 General.13 4.6.2 Signal generator.13 4.6.3 Filter.15 4.6.4 Level meter.16 4.6.5 Distortion meter.17 4.6.6 Frequency meter.18 4.6.7 Group delay meter.18 4.6.8 Analogue spectrum analyzer.19 4.6.9 Digital waveform monitor.19 4.6.10 Voltage amplifier.19 4.6.11 Standard
14、digital player.20 5 Methods of measurement(digital-in/analogue-out).20 5.1 General.20 5.2 Input/output characteristics.20 5.2.1 Maximum output amplitude.20 5.2.2 Gain difference between channels and tracking error.20 5.3 Frequency characteristics.21 5.3.1 Frequency response.21 5.3.2 Group delay(phas
15、e linearity).21 5.4 Noise characteristics.21 5.4.1 Signal-to-noise ratio(idle channel noise).21 5.4.2 Dynamic range.22 5.4.3 Out-of-band noise ratio.22 5.4.4 Channel separation.22 5.5 Distortion characteristics.23 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPP
16、LIED BY BOOK SUPPLY BUREAU.61606-1 IEC:2009(E)3 5.5.1 Level non-linearity.23 5.5.2 Distortion and noise.23 5.5.3 Intermodulation.23 6 Methods of measurement(analogue-in/digital-out).23 6.1 General.23 6.2 Input/output characteristics.23 6.2.1 Analogue to digital level calibration.23 6.2.2 Maximum allowable input amplitude.24 6.2.3 Gain difference between channel and tracking error.24 6.3 Frequency characteristics.24 6.3.1 Frequency response.24 6.3.2 Group delay.25 6.4 Noise characteristics.25 6.4
