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 61606-1:2009National forewordThis British Standard is t
2、he 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 CommitteeEPL/100, Audio, video and multimedia systems and equipment.A list of organizations represented o
3、n 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. BSI 2010ISBN 978 0 580 60898 8ICS 33.160.01Compliance with a British Standard cannot confer immunity
4、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 affectedBRITISH STANDARDBS EN 61606-1:2009EUROPEAN STANDARD EN 61606-1 NORME EUROPENNE EUROPISCHE NORM N
5、ovember 2009 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation 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 mean
6、s reserved worldwide for CENELEC members. Ref. No. EN 61606-1:2009 E ICS 33.160.01 Supersedes EN 61606-1:2004English version Audio and audiovisual equipment - Digital audio parts - Basic measurement methods of audio characteristics - Part 1: General (IEC 61606-1:2009) Equipements audio et audiovisue
7、ls - Parties audionumriques - Mthodes fondamentales pour la mesure des caractristiques audio - Partie 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
8、 was approved by CENELEC on 2009-09-01. 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
9、such national standards may 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 ow
10、n language and notified to the 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, Ital
11、y, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 61606-1:2009EN 61606-1:2009 - 2 - Foreword The text of document 100/1547/FDIS, future edition 2 of IEC 61606-1, prepared by IEC TC
12、 100, 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: cha
13、nged 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 identi
14、cal 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
15、as 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 61606-1:2009- 3 - EN 61606-1:2009 Annex ZA (normative) Normative references to
16、 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 referenced document (including
17、 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)IEC standard voltages2)HD 472 S1 + corr. February A1 19893)2002 1995 IEC 60107-5 1)Recommended met
18、hods 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 60107-5 19923)IEC 60268-2 1)Sound system equipment - Part 2: Explanation of general terms and calcu
19、lation 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)Methods of measurement on receivers for satellite broadcast transmissions in the 12 GHz band - Part 4
20、: 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 - Part 5: Electrical measurements on decoder units for MAC/Packet systems EN 61079-5 19933)IEC 6
21、1606-2 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 - Digital audio parts - Basic measurement methods of audio characteristics - Part 3: Professional
22、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 61606-1:2009EN 61606-1:2009 - 4 - Publication Year Title EN/HD Year IEC 61606-4 1)Audio and audiovisual equipment - Digit
23、al audio parts - Basic measurements methods of audio characteristics - Part 4: Personal computer EN 61606-4 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 d
24、ata transmission EN 61883-6 20053)ITU-R BS 468-4 1)Measurement of audio-frequency noise voltage level in sound broadcasting - - AES 17 1)AES standard method for digital audio engineering - Measurement of digital audio equipment - - BS EN 61606-1:2009 2 61606-1 IEC:2009(E) CONTENTS 1 Scope.6 2 Normat
25、ive references .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-frequenc
26、y and 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 in
27、struments 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 play
28、er.20 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 linear
29、ity).21 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 61606-1:200961606-1 IEC:2009(E) 3 5.5.1 Level non-linearity .23 5.5.2 Distortion and
30、 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 allowable input amplitude.24 6.2.3 Gain difference between channel and tracking error 24 6.3 Fre
31、quency 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 Cross-talk26 6.4.5 Channel separation .26 6.5 Distortion characteristics .26 6.5.1 Level non-
32、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 measurement 11 Table 2 Impulse conditions and measuring range.19 BS EN 61606-1:2009 6 61606-1
33、IEC:2009(E) AUDIO AND AUDIOVISUAL EQUIPMENT DIGITAL AUDIO PARTS BASIC MEASUREMENT METHODS OF AUDIO CHARACTERISTICS 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 equipmen
34、t for all of consumer use, professional use and personal computer. The common measuring conditions and methods, 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
35、 of a system, where the audio information is processed in the form of digital data. CD players, DAT recorders, digital amplifiers, digital sound broadcast receivers and television broadcast receivers with digital sound are examples. This standard describes test methods for equipment which has digita
36、l input with analogue output and analogue input with digital output. Future revisions of this standard will 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
37、system having an analogue input and an analogue output with digital signal processing may have different characteristics 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
38、 may not give correct results when applied to a digital system. NOTE 2 The methods described are mostly based 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
39、 to harmonize with the first edition of IEC 61606 (1997)1, AES17 and EIAJ CP-2i50. 2 Normative references 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
40、 referenced document (including any amendments) applies. IEC 60038, IEC standard voltages IEC 60107-5, 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
41、 sound system 1IEC 61606:1997, Audio and audiovisual equipment Digital audio parts Basic methods of measurement of audio characteristics (this publication has been replaced by the IEC 61606 series) BS EN 61606-1:200961606-1 IEC:2009(E) 7 IEC 60268-2, Sound system equipment Part 2: Explanation of gen
42、eral terms 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 aud
43、iovisual 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 rece
44、ivers 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, Methods of measurement on receivers for satellite broadcast transmissions in the 12 GHz band Part 5: Electrical measurements
45、on decoder 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
46、 broadcasting 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 f
47、requency components below the folding frequency made from the input signal above the folding frequency 3.1.2 analogue full-scale amplitude nominal signal level at the analogue input of an EUT corresponding to the digital full-scale level 3.1.3 coding format series of data bit stream with control inf
48、ormation in accordance with the standard for which the EUT is designed, such as IEC 60958, IEC 61883-6 or some kind of AV interface NOTE A coding word is arranged as a 2s complimentary binary form in this standard. BS EN 61606-1:2009 8 61606-1 IEC:2009(E) 3.1.4 digital audio signal series of digital
49、 signals expressed by sampled data NOTE This data is constructed with LPCM (Linear Pulse Code Modulation) data. 3.1.5 digital interface for measurement type of input or output digital interface which is used for measurement, such as IEC 60958, IEC 61883-6 or some kind of AV interface NOTE Details are defined in IEC 61606-2 (consumer use) or IEC 61606-3 (professional use). 3.1.6 digital signal generator all types o
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