IEC-61606-2-2003.pdf
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1、INTERNATIONAL STANDARD IEC 61606-2 First edition 2003-10 Audio and audiovisual equipment Digital audio parts Basic measurement methods of audio characteristics Part 2: Consumer use Reference number IEC 61606-2:2003(E) Copyright International Electrotechnical Commission Provided by IHS under license
2、with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 02:47:28 MSTNo reproduction or networking permitted without license from IHS -,-,- Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series. For example,
3、 IEC 34-1 is now referred to as IEC 60034-1. Consolidated editions The IEC is now publishing consolidated versions of its publications. For example, edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the base publication incorporating amendment 1 and the base publication
4、incorporating amendments 1 and 2. Further information on IEC publications The technical content of IEC publications is kept under constant review by the IEC, thus ensuring that the content reflects current technology. Information relating to this publication, including its validity, is available in
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7、tion is also available on recently issued publications, withdrawn and replaced publications, as well as corrigenda. IEC Just Published This summary of recently issued publications (http:/www.iec.ch/online_news/ justpub/jp_entry.htm) is also available by email. Please contact the Customer Service Cen
8、tre (see below) for further information. Customer Service Centre If you have any questions regarding this publication or need further assistance, please contact the Customer Service Centre: Email: custserviec.ch Tel: +41 22 919 02 11 Fax: +41 22 919 03 00 Copyright International Electrotechnical Com
9、mission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 02:47:28 MSTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD IEC 61606-2 First edition 2003-10 Audio and audiovisual equipment Di
10、gital audio parts Basic measurement methods of audio characteristics Part 2: Consumer use IEC 2003 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
11、 in writing from the publisher. International Electrotechnical Commission, 3, rue de Varemb, PO Box 131, CH-1211 Geneva 20, Switzerland Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmailiec.ch Web: www.iec.ch V For price, see current catalogue PRICE CODE Commission Electrotechnique
12、 Internationale International Electrotechnical Commission Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 02:47:28 MSTNo reproduction or networking permitted without license from
13、 IHS -,-,- 2 61606-2 IEC:2003(E) CONTENTS FOREWORD 4 1Scope 6 2Normative references. 6 3Terms, definitions, explanations and rated values 6 3.1Definitions 6 3.2Explanation of terms. 7 3.3Digital interface for measurement . 7 3.4Rated values 7 4Measuring conditions. 7 4.1Environmental conditions 7 4.
14、2Power supply 7 4.3Test signal frequencies. 7 4.4Standard setting . 7 4.5Preconditioning. 7 4.6Measuring instruments 8 4.6.1Digital level meter. 8 4.6.2Distortion meter 8 5Methods of measurement (digital-in/analogue-out). 9 5.1Input/output characteristics. 9 5.1.1Maximum output amplitude . 9 5.1.2Ga
15、in difference between channels 9 5.2Frequency characteristics10 5.2.1Frequency response 10 5.2.2Group delay (phase linearity).10 5.3Noise characteristics .11 5.3.1Signal-to-noise ratio.11 5.3.2Dynamic range.12 5.3.3Out-of-band noise ratio 12 5.3.4Channel separation13 5.4Distortion characteristics .1
16、4 5.4.1Level non-linearity .14 5.4.2Distortion and noise.15 5.4.3Intermodulation15 6Methods of measurement (analogue-in/digital-out)16 6.1Input/output characteristics16 6.1.1Analogue to digital level calibration16 6.1.2Maximum allowable input amplitude.17 6.1.3Gain difference between channel and tra
17、cking error.18 6.2Frequency characteristics20 6.2.1Frequency response 20 6.2.2Group delay.21 6.3Noise characteristics .22 6.3.1Signal-to-noise ratio (idle channel noise) .22 6.3.2Dynamic range.23 6.3.3Folded noise25 Copyright International Electrotechnical Commission Provided by IHS under license wi
18、th IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 02:47:28 MSTNo reproduction or networking permitted without license from IHS -,-,- 61606-2 IEC:2003(E) 3 6.3.4Cross-talk 26 6.3.5Channel separation28 6.4Distortion characteristics .30 6.4.1Level non-linearity .30 6
19、.4.2Distortion and noise.31 6.4.3Intermodulation32 Table 1 Levels for measurement 14 Table 2 Upper limited measuring frequency26 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 0
20、2:47:28 MSTNo reproduction or networking permitted without license from IHS -,-,- 4 61606-2 IEC:2003(E) INTERNATIONAL ELECTROTECHNICAL COMMISSION _ AUDIO AND AUDIOVISUAL EQUIPMENT DIGITAL AUDIO PARTS BASIC MEASUREMENT METHODS OF AUDIO CHARACTERISTICS Part 2: Consumer use FOREWORD 1)The International
21、 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 electronic fi
22、elds. 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 committees; any I
23、EC 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 for Standardiz
24、ation (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 committee has represen
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