1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationAudio and audiovisual equipment Digital audio parts Basic measurementmethods of audio characteristics Part 1: GeneralBS EN 61606-1:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA
2、 STANDARDS, 14/04/2010 02:53, Uncontrolled Copy, (c) BSINational forewordThis British Standard is the UK implementation of EN 61606-1:2009. It isidentical to IEC 61606-1:2009. It supersedes BS EN 61606-1:2004 which iswithdrawn.The UK participation in its preparation was entrusted to Technical Commit
3、teeEPL/100, Audio, video and multimedia systems and equipment.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. BS
4、I 2010ISBN 978 0 580 60898 8ICS 33.160.01Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 31 January 2010Amendments issued since publicationAmd. No. Date Text affec
5、tedBRITISH STANDARDBS EN 61606-1:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 02:53, Uncontrolled Copy, (c) BSIEUROPEAN STANDARD EN 61606-1 NORME EUROPENNE EUROPISCHE NORM November 2009 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalis
6、ation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: Avenue Marnix 17, B - 1000 Brussels 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61606-1:2009 E ICS 33.160.01 Supersedes EN 61606
7、-1:2004English version Audio and audiovisual equipment - Digital audio parts - Basic measurement methods of audio characteristics - Part 1: General (IEC 61606-1:2009) Equipements audio et audiovisuels - Parties audionumriques - Mthodes fondamentales pour la mesure des caractristiques audio - Partie
8、1: Gnralits (CEI 61606-1:2009) Audio- und audiovisuelle Gerte - Digitale Tonteile - Grundlegende Messverfahren der Audio-Eigenschaften - Teil 1: Allgemeines (IEC 61606-1:2009) This European Standard was approved by CENELEC on 2009-09-01. CENELEC members are bound to comply with the CEN/CENELEC Inter
9、nal 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 be obtained on application to the Central Secretariat or to any CENELEC me
10、mber. 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 the Central Secretariat has the same status as the official versions. CENEL
11、EC 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, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia,
12、 Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 61606-1:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 02:53, Uncontrolled Copy, (c) BSIEN 61606-1:2009 - 2 - Foreword The text of document 100/1547/FDIS, future edition 2 of IEC 61606-1, prepared by IEC TC 10
13、0, Audio, video and multimedia systems and equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61606-1 on 2009-09-01. This European Standard supersedes EN 61606-1:2004. The significant technical changes with respect to EN 61606-1:2004 are the following: change
14、d the period of preconditioning; add A weighting filter in measuring instruments; correct the wrong reference number; some inappropriate descriptions have been improved. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical
15、 national standard or by endorsement (dop) 2010-06-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2012-09-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61606-1:2009 was approved by CENELEC as
16、a European Standard without any modification. In the official version, for Bibliography, the following note has to be added for the standard indicated: IEC 61938 NOTE Harmonized as EN 61938:1997 (not modified). _ BS EN 61606-1:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 02:
17、53, Uncontrolled Copy, (c) BSI- 3 - EN 61606-1:2009 Annex ZA (normative) 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
18、 cited applies. For undated references, the latest edition of the referenced 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 60038 1)IE
19、C standard voltages2)HD 472 S1 + corr. February A1 19893)2002 1995 IEC 60107-5 1)Recommended methods of measurement on receivers for television broadcast transmissions - Part 5: Electrical measurements on multichannel sound television receivers using the NICAM two-channel digital sound-system EN 601
20、07-5 19923)IEC 60268-2 1)Sound system equipment - Part 2: Explanation of general terms and calculation methods HD 483.2 S219933)IEC 60268-3 1)Sound system equipment - Part 3: Amplifiers EN 60268-3 + corr. January 20003)2002 IEC 60958 Series Digital audio interface EN 60958 Series IEC 61079-4 1)Metho
21、ds of measurement on receivers for satellite broadcast transmissions in the 12 GHz band - Part 4: Electrical measurements on sound/data decoder units for the digital subcarrier/NTSC system - - IEC 61079-5 1)Methods of measurement on receivers for satellite broadcast transmissions in the 12 GHz band
22、- Part 5: Electrical measurements on decoder units for MAC/Packet systems EN 61079-5 19933)IEC 61606-2 1)Audio and audiovisual equipment - Digital audio parts - Basic measurement methods of audio characteristics - Part 2: Consumer use EN 61606-2 20093)IEC 61606-3 1)Audio and audiovisual equipment -
23、Digital audio parts - Basic measurement methods of audio characteristics - Part 3: Professional use EN 61606-3 20083)1)Undated reference. 2)The title of HD 472 S1 is: Nominal voltages for low-voltage public electricity supply systems. 3)Valid edition at date of issue. BS EN 61606-1:2009Licensed Copy
24、: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 02:53, Uncontrolled Copy, (c) BSIEN 61606-1:2009 - 4 - Publication Year Title EN/HD Year IEC 61606-4 1)Audio and audiovisual equipment - Digital audio parts - Basic measurements methods of audio characteristics - Part 4: Personal computer EN 61606
25、-4 20063)IEC 61672-1 1)Electroacoustics - Sound level meters - Part 1: Specifications EN 61672-1 20033)IEC 61883-6 1)Consumer audio/video equipment - Digital interface - Part 6: Audio and music data transmission EN 61883-6 20053)ITU-R BS 468-4 1)Measurement of audio-frequency noise voltage level in
26、sound broadcasting - - AES 17 1)AES standard method for digital audio engineering - Measurement of digital audio equipment - - BS EN 61606-1:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 02:53, Uncontrolled Copy, (c) BSI 2 61606-1 IEC:2009(E) CONTENTS 1 Scope.6 2 Normative re
27、ferences .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 conditions10 4.1 Environmental conditions 10 4.2 Power supply.10 4.2.1 Supply voltage.10 4.2.2 Frequency(ies) 10 4.2.3 High-frequency and
28、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 4.6 Measuring instrume
29、nts 13 4.6.1 General .13 4.6.2 Signal generator 13 4.6.3 Filter15 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 analyzer19 4.6.9 Digital waveform monitor .19 4.6.10 Voltage amplifier .19 4.6.11 Standard digital player.20
30、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 characteristics21 5.3.1 Frequency response 21 5.3.2 Group delay (phase linearity).2
31、1 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 ratio22 5.4.4 Channel separation .22 5.5 Distortion characteristics .23 BS EN 61606-1:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 02:53, Uncon
32、trolled Copy, (c) BSI61606-1 IEC:2009(E) 3 5.5.1 Level non-linearity .23 5.5.2 Distortion and noise.23 5.5.3 Intermodulation23 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 all
33、owable input amplitude.24 6.2.3 Gain difference between channel and tracking error 24 6.3 Frequency characteristics24 6.3.1 Frequency response 24 6.3.2 Group delay.25 6.4 Noise characteristics .25 6.4.1 Signal-to-noise ratio (idle channel noise) .25 6.4.2 Dynamic range 25 6.4.3 Folded noise26 6.4.4
34、Cross-talk26 6.4.5 Channel separation .26 6.5 Distortion characteristics .26 6.5.1 Level non-linearity .26 6.5.2 Distortion and noise.27 6.5.3 Intermodulation27 Bibliography28 Figure 1 Analogue test signal waveform.14 Figure 2 Digital test signal waveform .14 Table 1 Actual frequencies used in the m
35、easurement 11 Table 2 Impulse conditions and measuring range.19 BS EN 61606-1:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 02:53, Uncontrolled Copy, (c) BSI 6 61606-1 IEC:2009(E) AUDIO AND AUDIOVISUAL EQUIPMENT DIGITAL AUDIO PARTS BASIC MEASUREMENT METHODS OF AUDIO CHARACTER
36、ISTICS Part 1: General 1 Scope This part of IEC 61606 is applicable to the basic methods of measurement of the audio characteristics of the digital audio part of audio and audiovisual equipment for all of consumer use, professional use and personal computer. The common measuring conditions and metho
37、ds, described in this standard, are used for the measurement of the performance characteristics of equipment having an audio bandwidth equal to approximately one-half of the sampling frequency of a system, where the audio information is processed in the form of digital data. CD players, DAT recorder
38、s, digital amplifiers, digital sound broadcast receivers and television broadcast receivers with digital sound are examples. This standard describes test methods for equipment which has digital input with analogue output and analogue input with digital output. Future revisions of this standard will
39、cover digital-in/digital-out and analogue-in/analogue-out tests. This standard does not apply to a lossy compression signal and also does not apply to power amplifiers. NOTE 1 A digital audio system having an analogue input and an analogue output with digital signal processing may have different cha
40、racteristics from those of a pure analogue audio system due to sampling of the audio signal and performance of incorporated A/D and D/A converters. Measurement methods described in IEC 60268-3 may not give correct results when applied to a digital system. NOTE 2 The methods described are mostly base
41、d on sampling frequencies of 32 kHz and higher. NOTE 3 For tests of those systems of digital-in digital-out, and analogue-in analogue-out tests, refer to AES17. NOTE 4 This standard is planned to harmonize with the first edition of IEC 61606 (1997)1, AES17 and EIAJ CP-2i50. 2 Normative references Th
42、e 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 referenced document (including any amendments) applies. IEC 60038, IEC standard voltages IEC 60107-5, Recom
43、mended methods of measurement on receivers for television broadcast transmissions Part 5: Electrical measurements on multichannel sound television receivers using the NICAM two-channel digital sound system 1IEC 61606:1997, Audio and audiovisual equipment Digital audio parts Basic methods of measurem
44、ent of audio characteristics (this publication has been replaced by the IEC 61606 series) BS EN 61606-1:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 02:53, Uncontrolled Copy, (c) BSI61606-1 IEC:2009(E) 7 IEC 60268-2, Sound system equipment Part 2: Explanation of general term
45、s and calculation methods IEC 60268-3, Sound system equipment Part 3: Amplifiers IEC 60958 (all parts), Digital audio interface IEC 61606-2, Audio and audiovisual equipment Digital audio parts Basic measurement methods of audio characteristics Part 1: Consumer use IEC 61606-3, Audio and audiovisual
46、equipment Digital audio parts Basic measurement methods of audio characteristics Part 3: Professional use IEC 61606-4, Audio and audiovisual equipment Digital audio parts Basic measurement methods of audio characteristics Part 4: Personal computer IEC 61079-4, Methods of measurement on receivers for
47、 satellite broadcast transmissions in the 12 GHz band Part 4: Electrical measurements on sound/data decoder units for the digital subcarrier NTSC system IEC 61079-5, Methods of measurement on receivers for satellite broadcast transmissions in the 12 GHz band Part 5: Electrical measurements on decode
48、r units for MAC/packet systems IEC 61672-1, Electroacoustics Sound level meters Part 1: Specifications IEC 61883-6, Consumer audio/video equipment Digital interface Part 6: Audio and music data transmission protocol ITU-R BS 468-4, Measurement of audio-frequency noise voltage level in sound broadcas
49、ting AES17, AES standard method for digital audio engineering Measurement of digital audio equipment 3 Terms, definitions, explanations and rated values 3.1 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1.1 aliasing components output frequency components below the folding frequency made from the input signal above the folding frequency 3.1.2 analogue full-scale amp
