1、Audio and audiovisual equip-ment Digital audio parts Basic measurement methodsof audio characteristics Part 3: Professional useBS EN 61606-3:2008raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI British StandardsNational forewordThis British Standar
2、d is the UK implementation of EN 61606-3:2008. It isidentical to IEC 61606-3:2008.The UK participation in its preparation was entrusted to Technical CommitteeEPL/100, Audio, video and multimedia systems and equipment.A list of organizations represented on this committee can be obtained onrequest to
3、its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. BSI 2009ISBN 978 0 580 59552 3ICS 33.160.30BRITISH STANDARDBS EN 61606-3:2008Compliance with a British Standard cannot confer immunity fromlegal ob
4、ligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 31 March 2009 Amendments issued since publicationAmd. No. Date Text affectedEUROPEAN STANDARD EN 61606-3 NORME EUROPENNE EUROPISCHE NORM November 2008 CENELEC European Committee for Ele
5、ctrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref
6、. No. EN 61606-3:2008 E ICS 33.160.30 English version Audio and audiovisual equipment - Digital audio parts - Basic measurement methods of audio characteristics - Part 3: Professional use (IEC 61606-3:2008) Equipements audio et audiovisuels - Parties audionumriques - Mthodes fondamentales pour la me
7、sure des caractristiques audio - Partie 3: Utilisations professionnelles (CEI 61606-3:2008) Audio- und audiovisuelle Gerte - Digitale Tonteile - Grundlegende Messverfahren der Audio-Eigenschaften - Teil 3: Professioneller Gebrauch (IEC 61606-3:2008) This European Standard was approved by CENELEC on
8、2008-11-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may
9、be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to t
10、he Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxemb
11、ourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 61606-3:2008EN 61606-3:2008 - 2 - Foreword The text of document 100/1428/FDIS, future edition 1 of IEC 61606-3, prepared by IEC TC 100, Audio, video and multi
12、media systems and equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61606-3 on 2008-11-01. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement
13、(dop) 2009-08-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2011-11-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61606-3:2008 was approved by CENELEC as a European Standard without any modif
14、ication. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60268-3 NOTE Harmonized as EN 60268-3:2000 (not modified). IEC 61938 NOTE Harmonized as EN 61938:1997 (not modified). _ BS EN 61606-3:2008- 3 - EN 61606-3:2008 Annex ZA (normativ
15、e) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the refe
16、renced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60268-1 -1)Sound system equipment - Part 1: General HD 483.1 S2 19892)IEC 60268-
17、2 -1)Sound system equipment - Part 2: Explanation of general terms and calculation methods HD 483.2 S2 19932)IEC 60958-1 -1)Digital audio interface - Part 1: General EN 60958-1 20082)IEC 61260 -1)Electroacoustics - Octave-band and fractional-octave-band filters EN 61260 19952)IEC 61606-1 -1)Audio an
18、d audiovisual equipment - Digital audio parts - Basic measurement methods of audio characteristics - Part 1: General EN 61606-1 20042)AES11 2003 AES recommended practice for digital audio engineering - Synchronization of digital audio equipment in studio operations - - 1)Undated reference. 2)Valid e
19、dition at date of issue. BS EN 61606-3:2008 2 61606-3 IEC:2008(E) CONTENTS 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 signal frequencies .11 5.4 Standard settings 11 5.5 Precon
20、ditioning .11 5.6 Measuring instruments 11 5.6.1 General .11 5.6.2 Signal generator 11 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 6.2.3 Noise.26 6.2.4 Interference products.28 6.2.5 Samplin
21、g 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 measurement methods 37 Bibliography41 Figure 1 Signal genera
22、tor 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 response method 17 Figure 10 Maximum input and output amplit
23、ude 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 BS EN 61606-3:200861606-3 IEC:2008(E) 3 Figure 14 Individual harmonic distortion method 22 Figure 15 Total harmonic distortion
24、method .22 Figure 16 Largest spurious 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
25、 noise method .26 Figure 23 Idle-channel 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
26、of the aliasing components method 30 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 Anal
27、ogue full-scale output amplitude method .34 Figure 36 Output balance method 35 Table A.1 Stimulus wavetables 38 BS EN 61606-3:2008 4 61606-3 IEC:2008(E) INTERNATIONAL ELECTROTECHNICAL COMMISSION _ AUDIO AND AUDIOVISUAL EQUIPMENT DIGITAL AUDIO PARTS BASIC MEASUREMENT METHODS OF AUDIO CHARACTERISTICS
28、Part 3: Professional use FOREWORD 1) The International 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 concerni
29、ng standardization in the electrical and electronic fields. 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 p
30、reparation is entrusted to technical committees; any IEC 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 close
31、ly with the International Organization for Standardization (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 relevan
32、t subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications 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 tec
33、hnical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum ex
34、tent possible in their national and regional publications. Any divergence between any IEC Publication 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
35、any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition 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 committe
36、es and IEC National Committees for any personal injury, property damage or other damage of any 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.
37、 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced 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 r
38、ights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61606-3 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
39、 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. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. BS EN 61606-3:200861606-3 IEC:2008(E) 5 A list o
40、f 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 conjunction with IEC 61606-1. The committee has decided t
41、hat 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 reconfirmed, withdrawn, replaced by a revised edition, or am
42、ended. A bilingual version of this publication may be issued at a later date. BS EN 61606-3:2008 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
43、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
44、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
45、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
46、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
47、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
48、mended Practice for Digital Audio Engineering Synchronization of digital audio equipment in studio operations BS EN 61606-3:200861606-3 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 61
49、606-1 3.2 analogue full-scale input and output amplitude when applied 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 i
