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1、 IEC 61606-3 Edition 1.0 2008-10 INTERNATIONAL STANDARD Audio and audiovisual equipment Digital audio parts Basic measurement methods of audio characteristics Part 3: Professional use IEC 61606-3:2008(E) Copyright International Electrotechnical Commission Provided by IHS under license with IECLicens
2、ee=Boeing Co/5910770001 Not for Resale, 01/29/2009 19:26:40 MSTNo reproduction or networking permitted without license from IHS -,-,- THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2008 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be re
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9、e 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 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/59
10、10770001 Not for Resale, 01/29/2009 19:26:40 MSTNo reproduction or networking permitted without license from IHS -,-,- IEC 61606-3 Edition 1.0 2008-10 INTERNATIONAL STANDARD Audio and audiovisual equipment Digital audio parts Basic measurement methods of audio characteristics Part 3: Professional us
11、e INTERNATIONAL ELECTROTECHNICAL COMMISSION X ICS 33.160.30 PRICE CODE ISBN 2-8318-1008-6 Registered trademark of the International Electrotechnical Commission Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 01/2
12、9/2009 19:26:40 MSTNo reproduction or networking permitted without license from IHS -,-,- 2 61606-3 IEC:2008(E) CONTENTS FOREWORD.4 1 Scope.6 2 Normative references .6 3 Terms and definitions .7 4 Rated values 10 5 Measuring conditions10 5.1 Environmental conditions 10 5.2 Power supply.10 5.3 Test s
13、ignal frequencies .11 5.4 Standard settings 11 5.5 Preconditioning .11 5.6 Measuring instruments 11 5.6.1 General .11 5.6.2 Signal generator11 5.6.3 Signal analyzer12 6 Measurement methods .16 6.1 Overview.16 6.2 General characteristics16 6.2.1 Linear response.16 6.2.2 Amplitude non-linearity21 6.2.
14、3 Noise.26 6.2.4 Interference products.28 6.2.5 Sampling effects30 6.3 Input/output characteristics .32 6.3.1 Analogue input characteristics.32 6.3.2 Analogue output characteristics.34 6.3.3 Digital input characteristics35 6.3.4 Digital output characteristics36 Annex A (normative) Alternative measur
15、ement methods 37 Bibliography41 Figure 1 Signal generator 11 Figure 2 Wideband amplitude.13 Figure 3 In-band amplitude 13 Figure 4 Out-of-band amplitude .13 Figure 5 Selective amplitude13 Figure 6 Residual amplitude.13 Figure 7 Weighted amplitude .14 Figure 8 Gain method 16 Figure 9 Frequency respon
16、se method 17 Figure 10 Maximum input and output amplitude method.18 Figure 11 Distortion-and-noise method 21 Figure 12 Distortion and noise versus frequency method .21 Figure 13 Distortion and noise versus amplitude method .22 Copyright International Electrotechnical Commission Provided by IHS under
17、 license with IECLicensee=Boeing Co/5910770001 Not for Resale, 01/29/2009 19:26:40 MSTNo reproduction or networking permitted without license from IHS -,-,- 61606-3 IEC:2008(E) 3 Figure 14 Individual harmonic distortion method 22 Figure 15 Total harmonic distortion method .22 Figure 16 Largest spuri
18、ous signal method23 Figure 17 Intermodulation method23 Figure 18 Intermodulation method24 Figure 19 Amplitude-dependent gain method .25 Figure 20 Intrinsic signal modulation products method .25 Figure 21 Low-amplitude noise modulation method26 Figure 22 Idle-channel noise method .26 Figure 23 Idle-c
19、hannel noise spectrum method 27 Figure 24 Dynamic range method 27 Figure 25 Out-of-band noise ratio method27 Figure 26 Channel separation method28 Figure 27 Non-linear cross-talk method29 Figure 28 Power-line (mains) related products method.30 Figure 29 Suppression of the aliasing components method3
20、0 Figure 30 Suppression of imaging components method31 Figure 31 Sampling jitter susceptibility method 32 Figure 32 Analogue full-scale input amplitude method .32 Figure 33 Overload behaviour method .33 Figure 34 Common-mode rejection ratio method 33 Figure 35 Analogue full-scale output amplitude me
21、thod .34 Figure 36 Output balance method 35 Table A.1 Stimulus wavetables 38 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 01/29/2009 19:26:40 MSTNo reproduction or networking permitted without license from IHS
22、 -,-,- 4 61606-3 IEC:2008(E) INTERNATIONAL ELECTROTECHNICAL COMMISSION _ AUDIO AND AUDIOVISUAL EQUIPMENT DIGITAL AUDIO PARTS BASIC MEASUREMENT METHODS OF AUDIO CHARACTERISTICS Part 3: Professional use FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for sta
23、ndardization 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 fields. To this end and in addition to other activities, IEC publishes I
24、nternational 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 IEC National Committee interested in the subject dealt with may partici
25、pate 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 Standardization (ISO) in accordance with conditions determined by agreement betw
26、een 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 representation from all interested IEC National Committees. 3) IEC Publicatio
27、ns 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 accurate, IEC cannot be held responsible for the way in which they are used or for an
28、y 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 regional publications. Any divergence between any IEC Publication and the corresponding
29、 national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest ed
30、ition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents 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 d
31、irect or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, 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 indispe
32、nsable for the correct application of this publication. 9) Attention is drawn to the possibility that some 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. International Standard IEC 61606-3
33、has been prepared by IEC technical committee 100:Audio, video and multimedia systems and equipment. The text of this standard is based on the following documents: FDIS Report on voting 100/1428/FDIS 100/1453/RVD Full information on the voting for the approval of this standard can be found in the rep
34、ort on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 01/29/2009 19:26:40 MSTNo reproduct
35、ion or networking permitted without license from IHS -,-,- 61606-3 IEC:2008(E) 5 A list of all parts of the IEC 61606 series, under the general title Audio and audiovisual equipment Digital audio parts Basic measurement methods of audio characteristics, can be found on the IEC website. This Internat
36、ional Standard is to be used in conjunction with IEC 61606-1. The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this d
37、ate, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resal
38、e, 01/29/2009 19:26:40 MSTNo reproduction or networking permitted without license from IHS -,-,- 6 61606-3 IEC:2008(E) AUDIO AND AUDIOVISUAL EQUIPMENT DIGITAL AUDIO PARTS BASIC MEASUREMENT METHODS OF AUDIO CHARACTERISTICS Part 3: Professional use 1 Scope This part of IEC 61606 is applicable to the b
39、asic measurement methods of audio equipment for professional use. The definitions, measuring conditions and methods common to both consumer and professional equipment are described in the IEC 61606-1. This standard contains details of definitions and measuring conditions and methods applicable to pr
40、ofessional equipment which differ from those described in IEC 61606-1. This standard excludes consideration of measurement of low-quality audio devices, measurement of low-bit-rate audio devices (sub-band or perceptual coding devices), measurement of devices which significantly modify time or freque
41、ncy characteristics of the signal, such as pitch shifters or reverberators, measurement of signals from analogue input to analogue output, beyond the most general, EMC and safety related testing. 2 Normative references The following referenced documents are indispensable for the application of this
42、document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60268-1, Sound system equipment Part 1: General IEC 60268-2, Sound system equipment Part 2: Explanation of general terms and c
43、alculation methods IEC 60958-1, Digital audio interface Part 1: General IEC 61260, Electroacoustics Octave-band and fractional-octave-band filters IEC 61606-1, Audio and audiovisual equipment Digital audio parts Basic measurement methods of audio characteristics Part 1: General AES11-2003, AES Recom
44、mended Practice for Digital Audio Engineering Synchronization of digital audio equipment in studio operations Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 01/29/2009 19:26:40 MSTNo reproduction or networking p
45、ermitted without license from IHS -,-,- 61606-3 IEC:2008(E) 7 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 aliasing components see definition in IEC 61606-1 3.2 analogue full-scale input and output amplitude when applied to an analogue inp
46、ut of the EUT, it produces digital full-scale amplitude within the EUT; conversely, the analogue output full-scale amplitude is that which is produced at an analogue output from the EUT by a digital full-scale amplitude within the EUT NOTE 1 Sometimes the range of an analogue input or output path ma
47、y be less than that corresponding to digital full-scale amplitude. For this reason, analogue full-scale input and output amplitudes are usually inferred by driving the converters at a lower amplitude (see 6.3.1.1 and 6.3.2.1). NOTE 2 The ideal values of these amplitudes cannot be defined within the
48、standard since they are different for different EUTs, and may be modally variable for a single EUT. NOTE 3 Where these values are unknown for an EUT at the outset of testing, they should generally be established first (using the methods described in 6.3.1.1 and 6.3.2.1 since it may subsequently be necessary, for example, to drive