1、 IEC 61606-3 Edition 1.0 2008-10 INTERNATIONAL STANDARD NORME INTERNATIONALE Audio and audiovisual equipment Digital audio parts Basic measurement methods of audio characteristics Part 3: Professional use quipements audio et audiovisuels Parties audionumriques Mthodes fondamentales pour la mesure de
2、s caractristiques audio Partie 3: Usage professionnel IEC 61606-3:2008 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2008 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
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16、us: csciec.ch. IEC 61606-3 Edition 1.0 2008-10 INTERNATIONAL STANDARD NORME INTERNATIONALE Audio and audiovisual equipment Digital audio parts Basic measurement methods of audio characteristics Part 3: Professional use quipements audio et audiovisuels Parties audionumriques Mthodes fondamentales pou
17、r la mesure des caractristiques audio Partie 3: Usage professionnel INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE X ICS 33.160.30 PRICE CODE CODE PRIX ISBN 978-2-83220-367-5 Registered trademark of the International Electrotechnical Commission Marque dpose de l
18、a Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 61606-3 IEC:2008 CONTENTS FOREWORD . 4 1 Scope . 6 2 Normative referen
19、ces . 6 3 Terms and definitions . 7 4 Rated values 10 5 Measuring conditions 10 5.1 Environmental conditions 10 5.2 Power supply . 10 5.3 Test signal 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 generator 11 5.6.3 Sig
20、nal analyzer 12 6 Measurement methods . 16 6.1 Overview . 16 6.2 General characteristics 16 6.2.1 Linear response . 16 6.2.2 Amplitude non-linearity 21 6.2.3 Noise . 26 6.2.4 Interference products . 28 6.2.5 Sampling effects 30 6.3 Input/output characteristics . 32 6.3.1 Analogue input characteristi
21、cs . 32 6.3.2 Analogue output characteristics . 34 6.3.3 Digital input characteristics 35 6.3.4 Digital output characteristics 36 Annex A (normative) Alternative measurement methods 37 Bibliography 41 Figure 1 Signal generator 11 Figure 2 Wideband amplitude. 13 Figure 3 In-band amplitude 13 Figure 4
22、 Out-of-band amplitude . 13 Figure 5 Selective amplitude 13 Figure 6 Residual amplitude. 13 Figure 7 Weighted amplitude . 14 Figure 8 Gain method 16 Figure 9 Frequency response method 17 Figure 10 Maximum input and output amplitude method . 18 Figure 11 Distortion-and-noise method 21 Figure 12 Disto
23、rtion and noise versus frequency method . 21 Figure 13 Distortion and noise versus amplitude method . 22 61606-3 IEC:2008 3 Figure 14 Individual harmonic distortion method 22 Figure 15 Total harmonic distortion method . 22 Figure 16 Largest spurious signal method 23 Figure 17 Intermodulation method
24、23 Figure 18 Intermodulation method 24 Figure 19 Amplitude-dependent gain method . 25 Figure 20 Intrinsic signal modulation products method . 25 Figure 21 Low-amplitude noise modulation method 26 Figure 22 Idle-channel noise method . 26 Figure 23 Idle-channel noise spectrum method 27 Figure 24 Dynam
25、ic range method 27 Figure 25 Out-of-band noise ratio method 27 Figure 26 Channel separation method 28 Figure 27 Non-linear cross-talk method 29 Figure 28 Power-line (mains) related products method . 30 Figure 29 Suppression of the aliasing components method 30 Figure 30 Suppression of imaging compon
26、ents method 31 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 method . 34 Figure 36 Output balance met
27、hod 35 Table A.1 Stimulus wavetables 38 4 61606-3 IEC:2008 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
28、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 fields. To this end and in addition to oth
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34、lication and the corresponding 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 ensur
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36、y nature whatsoever, whether direct 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 refe
37、renced publications is indispensable 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. Inter
38、national Standard IEC 61606-3 has been prepared by IEC technical committee 100: Audio, video and multimedia systems and equipment. This bilingual version (2012-11) corresponds to the monolingual English version, published in 2008-10. The text of this standard is based on the following documents: FDI
39、S 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 report on voting indicated in the above table. 61606-3 IEC:2008 5 The French version of this standard has not been voted upon. This publication has been drafted in accor
40、dance with the ISO/IEC Directives, Part 2. 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 International Standard is to be used in conjun
41、ction 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 date, the publication will be reconfirm
42、ed, withdrawn, replaced by a revised edition, or amended. 6 61606-3 IEC:2008 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 basic measurement methods of audio equipmen
43、t 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 professional equipment which differ from tho
44、se 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 frequency characteristics of the signal, such as
45、 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 document. For dated references, only the e
46、dition 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 calculation methods IEC 60958-1, Digital au
47、dio 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 Recommended Practice for Digital Audio Engineer
48、ing Synchronization of digital audio equipment in studio operations 61606-3 IEC:2008 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 a
49、pplied to an analogue input 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 outpu
