IEC 61606-4-2005 Audio and audiovisual equipment - Digital audio parts - Basic measurements methods of audio characteristics - Part 4 Personal computer《音频和视听设备.数字音频部分.音频特性的基本测量方法.第4部分 个人电脑》.pdf

《IEC 61606-4-2005 Audio and audiovisual equipment - Digital audio parts - Basic measurements methods of audio characteristics - Part 4 Personal computer《音频和视听设备.数字音频部分.音频特性的基本测量方法.第4部分 个人电脑》.pdf》由会员分享，可在线阅读，更多相关《IEC 61606-4-2005 Audio and audiovisual equipment - Digital audio parts - Basic measurements methods of audio characteristics - Part 4 Personal computer《音频和视听设备.数字音频部分.音频特性的基本测量方法.第4部分 个人电脑》.pdf（66页珍藏版）》请在麦多课文档分享上搜索。

1、 IEC 61606-4 Edition 1.0 2005-12 INTERNATIONAL STANDARD NORME INTERNATIONALE Audio and audiovisual equipment Digital audio parts Basic measurement methods of audio characteristics Part 4: Personal computer Equipement audio et audiovisuel Parties audio numriques Mthodes de mesure de base des caractri

2、stiques audio Partie 4: Ordinateur personnel IEC 61606-4:2005 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2005 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 mechanic

3、al, including photocopying and microfilm, without permission in writing from either IEC or IECs member National Committee in the country of the requester. If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication, please contact the addres

4、s below or your local IEC member National Committee for further information. Droits de reproduction rservs. Sauf indication contraire, aucune partie de cette publication ne peut tre reproduite ni utilise sous quelque forme que ce soit et par aucun procd, lectronique ou mcanique, y compris la photoco

5、pie et les microfilms, sans laccord crit de la CEI ou du Comit national de la CEI du pays du demandeur. Si vous avez des questions sur le copyright de la CEI ou si vous dsirez obtenir des droits supplmentaires sur cette publication, utilisez les coordonnes ci-aprs ou contactez le Comit national de l

6、a CEI de votre pays de rsidence. IEC Central Office Tel.: +41 22 919 02 11 3, rue de Varemb Fax: +41 22 919 03 00 CH-1211 Geneva 20 infoiec.ch Switzerland www.iec.ch About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes Inter

7、national Standards for all electrical, electronic and related technologies. About IEC publications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latest edition, a corrigenda or an amendment might have been published. Useful lin

8、ks: IEC publications search - www.iec.ch/searchpub The advanced search enables you to find IEC publications by a variety of criteria (reference number, text, technical committee,). It also gives information on projects, replaced and withdrawn publications. IEC Just Published - webstore.iec.ch/justpu

9、blished Stay up to date on all new IEC publications. Just Published details all new publications released. Available on-line and also once a month by email. Electropedia - www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 30 000 terms a

10、nd definitions in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical Vocabulary (IEV) on-line. Customer Service Centre - webstore.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance, please co

11、ntact the Customer Service Centre: csciec.ch. A propos de la CEI La Commission Electrotechnique Internationale (CEI) est la premire organisation mondiale qui labore et publie des Normes internationales pour tout ce qui a trait llectricit, llectronique et aux technologies apparentes. A propos des pub

12、lications CEI Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possdez ldition la plus rcente, un corrigendum ou amendement peut avoir t publi. Liens utiles: Recherche de publications CEI - www.iec.ch/searchpub La recherche avance vous permet de tr

13、ouver des publications CEI en utilisant diffrents critres (numro de rfrence, texte, comit dtudes,). Elle donne aussi des informations sur les projets et les publications remplaces ou retires. Just Published CEI - webstore.iec.ch/justpublished Restez inform sur les nouvelles publications de la CEI. J

14、ust Published dtaille les nouvelles publications parues. Disponible en ligne et aussi une fois par mois par email. Electropedia - www.electropedia.org Le premier dictionnaire en ligne au monde de termes lectroniques et lectriques. Il contient plus de 30 000 termes et dfinitions en anglais et en fran

15、ais, ainsi que les termes quivalents dans les langues additionnelles. Egalement appel Vocabulaire Electrotechnique International (VEI) en ligne. Service Clients - webstore.iec.ch/csc Si vous dsirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: cscie

16、c.ch. IEC 61606-4 Edition 1.0 2005-12 INTERNATIONAL STANDARD NORME INTERNATIONALE Audio and audiovisual equipment Digital audio parts Basic measurement methods of audio characteristics Part 4: Personal computer Equipement audio et audiovisuel Parties audio numriques Mthodes de mesure de base des car

17、actristiques audio Partie 4: Ordinateur personnel INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE V ICS 35.020; 33.160.30 PRICE CODE CODE PRIX ISBN 978-2-88912-903-4 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commissi

18、on 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 61606-4 IEC:2005 CONTENTS FOREWORD . 4 1 Scope . 6 2 Normative references . 6 3

19、Terms, definitions and abbreviated terms . 6 3.1 Terms and definitions 6 3.2 Abbreviated terms . 8 3.3 Rated values . 8 4 Measuring conditions 8 4.1 Environmental conditions 8 4.2 Power supplies 8 4.3 Test signal frequencies . 9 4.4 Standard setting 10 4.5 Working setting . 11 4.6 Preconditioning .

20、12 5 Measuring instruments . 12 5.1 Analogue signal generator . 12 5.2 Analogue in-band level meter 12 5.3 Analogue low-pass filter 12 5.4 Analogue weighting filter . 12 5.5 Standard medium 12 5.6 Recording medium 13 5.7 Software for digital data evaluation 13 5.8 Short-term distortion meter 14 5.9

21、Other instruments 14 6 Methods of measurement (digital-in/analogue-out) . 14 6.1 Input/output characteristics . 15 6.2 Frequency response 16 6.3 Noise characteristics . 17 6.4 Distortion characteristics . 21 7 Methods of measurement (analogue-in/digital-out) . 23 7.1 Input/output characteristics . 2

22、3 7.2 Frequency response 25 7.3 Noise characteristics . 26 7.4 Distortion characteristics . 29 Figure 1 Block diagram for maximum output amplitude measurement 15 Figure 2 Block diagram for gain difference between channels measurement 16 Figure 3 Block diagram for frequency-response measurement . 16

23、Figure 4 Block diagram for signal-to-noise ratio measurement . 17 Figure 5 Block diagram for dynamic range measurement . 18 Figure 6 Block diagram for channel separation measurement. 20 Figure 7 Block diagram for distortion and noise measurement 21 Figure 8 Block diagram for short-term distortion me

24、asurement . 22 Figure 9 Block diagram for maximum allowable input amplitude measurement . 23 61606-4 IEC:2005 3 Figure 10 Block diagram for gain difference between channel and tracking error measurement 24 Figure 11 Block diagram for frequency response measurement 25 Figure 12 Block diagram for sign

25、al-to-noise ratio measurement . 26 Figure 13 Block diagram for dynamic range measurement . 27 Figure 14 Block diagram for channel separation measurement . 28 Figure 15 Block diagram for distortion and noise measurement 29 Figure 16 Block diagram for short-term distortion measurement . 30 Table 1 Fre

26、quencies used in the measurement 9 4 61606-4 IEC:2005 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ AUDIO AND AUDIOVISUAL EQUIPMENT DIGITAL AUDIO PARTS BASIC MEASUREMENT METHODS OF AUDIO CHARACTERISTICS Part 4: Personal computer FOREWORD 1) The International Electrotechnical Commission (IEC) is a worl

27、dwide 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 other a

28、ctivities, IEC publishes International 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 subj

29、ect 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 closely with the International Organization for Standardization (ISO) in accordance with conditions de

30、termined 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 relevant subjects since each technical committee has representation from all interested IEC National Com

31、mittees. 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 technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in whi

32、ch 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 extent possible in their national and regional publications. Any divergence between any IEC Publica

33、tion 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 ensure th

34、at 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 committees and IEC National Committees for any personal injury, property damage or other damage of any na

35、ture 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 referenc

36、ed 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. Internati

37、onal Standard IEC 61606-4 has been prepared by IEC technical committee 100: Audio, video and multimedia equipment and systems. This bilingual version (2012-05) corresponds to the monolingual English version, published in 2005-12. The text of this standard is based on the following documents: CDV Rep

38、ort on voting 100/952/CDV 100/1030/RVC Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. 61606-4 IEC:2005 5 The French version of this standard has not been voted upon. This publication has been drafted in accordance w

39、ith the ISO/IEC Directives, Part 2. IEC 61606 consists of the following parts under the general title Audio and audiovisual equipment Digital audio parts Basic measurement methods of audio characteristics: Part 1: General Part 2: Consumer use Part 3: Professional use 1Part 4: Personal computer The c

40、ommittee 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 reconfirmed; withdrawn; replaced by a

41、revised edition, or amended. 1Under consideration. 6 61606-4 IEC:2005 AUDIO AND AUDIOVISUAL EQUIPMENT DIGITAL AUDIO PARTS BASIC MEASUREMENT METHODS OF AUDIO CHARACTERISTICS Part 4: Personal computer 1 Scope This part of IEC 61606 specifies the basic measurement methods of a linear PCM signal for an

42、audio part of personal computers (PCs) and applies to both desktop and portable computers. The common measuring conditions and methods are described in IEC 61606-1. Specific conditions and methods of measurement for PCs are given in this standard. NOTE 1 The methods described are mostly based on sam

43、pling frequencies from 8 kHz to 192 kHz and bit length from 8 bit to 24 bit. NOTE 2 This standard describes tests for equipment which has digital input with analogue output and analogue input with digital output. Digital input data are provided from an internal HDD or other memory media and output d

44、igital data are recorded to an internal HDD or main memories. NOTE 3 The methods specified in this standard are not applicable to systems incorporating bit-rate reduced digital audio signals that have data loss or to 1-bit signals. This part does not apply to analogue input with analogue output and

45、digital input with digital output as described in IEC 61606-1. NOTE 4 When a CPU in a PC is overloaded by tasks other than those for audio input/output, the PC may fail to record/reproduce the whole audio data. This standard applies only to the measurement in which input/output data are recorded/rep

46、roduced without such missing data. The performance of a PC with missing audio data may be evaluated by the short-term distortion measurement although such evaluation is not within the scope of this standard. 2 Normative references The following referenced documents are indispensable for the applicat

47、ion 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 60268-2, Sound system equipment Part 2: Explanation of general terms and calculat

48、ion methods IEC 61606-1, Audio and audiovisual equipment Digital audio parts Basic measurement methods of audio characteristics Part 1: General IEC 61606-2, Audio and audiovisual equipment Digital audio parts Basic measurement methods of audio characteristics Part 2: Consumer use IEC 61672-1, Electr

49、oacoustics Sound level meters Part 1: Specifications 3 Terms, definitions and abbreviated terms 3.1 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 61606-1, as well as the following, apply. 61606-4 IEC:2005 7 3.1.1 personal computer PC personal computer which is designed to be used by one person at a time NOTE 1 A