1、BS ISO 7739:2016Cinematography Two-trackphotographic analogue soundrecords on 16 mm motion-picture prints Positions andwidth dimensionsBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 7739:2016 BRITISH STANDARDNational forewordThis British Standard is the UK im
2、plementation of ISO 7739:2016.The UK participation in its preparation was entrusted to TechnicalCommittee CPW/36, Cinematography.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions o
3、f a contract. Users are responsible for its correctapplication. The British Standards Institution 2016. Published by BSI StandardsLimited 2016ISBN 978 0 580 91746 2ICS 37.060.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under t
4、he authority of theStandards Policy and Strategy Committee on 31 July 2016.Amendments issued since publicationDate Text affectedBS ISO 7739:2016 ISO 2016Cinematography Two-track photographic analogue sound records on 16 mm motion-picture prints Positions and width dimensionsCinmatographie Enregistre
5、ment de deux pistes sonores optiques analogues sur copies dexploitation cinmatographiques 16 mm Positions et dimensions en largeurINTERNATIONAL STANDARDISO7739Second edition2016-07-01Reference numberISO 7739:2016(E)BS ISO 7739:2016ISO 7739:2016(E)ii ISO 2016 All rights reservedCOPYRIGHT PROTECTED DO
6、CUMENT ISO 2016, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior writte
7、n permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 7739:2016ISO
8、 7739:2016(E)Foreword iv1 Scope . 12 Normative references 13 Positions and dimensions . 14 Sound records 15 Picture-sound displacement 16 Track usage 1 ISO 2016 All rights reserved iiiContents PageBS ISO 7739:2016ISO 7739:2016(E)ForewordISO (the International Organization for Standardization) is a w
9、orldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented
10、on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this
11、 document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Dir
12、ectives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the devel
13、opment of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO s
14、pecific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 36, Cinematograp
15、hy.This second edition cancels and replaces the first edition (ISO 7739:1983), of which it constitutes a minor revision.iv ISO 2016 All rights reservedBS ISO 7739:2016INTERNATIONAL STANDARD ISO 7739:2016(E)Cinematography Two-track photographic analogue sound records on 16 mm motion-picture prints Po
16、sitions and width dimensions1 ScopeThis International Standard specifies the lateral positions and width dimensions of two-track variable area sound records on 16 mm motion-picture prints.This International Standard also specifies the area scanned by the sound reproducer.2 Normative referencesThe fo
17、llowing documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 4243, Cine
18、matography Picture image area and photographic sound record on 16 mm motion-picture release prints Positions and dimensions3 Positions and dimensionsThe positions and dimensions of the two sound records shall be as shown in Figure 1 and given in Table 1. In all other respects, the sound records shal
19、l comply with ISO 4243.4 Sound records4.1 Channel 1 and channel 2 recording and reproducing slit images shall be positioned in line at an angle 90 5 to the reference edge of the film.4.2 Channel 2 shall be recorded in the record nearest the outer edge of the film, as shown in Figure 1.4.3 The septum
20、 between channel records shall be effectively opaque on prints.A lighter septum resulting from direct positive recordings being printed on reversal print materials should not be cause for rejection of prints.5 Picture-sound displacementThe picture-sound displacement shall be as specified in ISO 4243
21、.6 Track usageThe two tracks specified in this International Standard may be used for either related stereophonic material or unrelated material. When used for two-channel stereophonic program material, track 1 shall be used for the left (as viewed from the auditorium) loudspeaker channel and track
22、2 shall be used for the right (as viewed from the auditorium) loudspeaker channel.It is recommended that the container and leader of the print having two sound records be labelled with the above information. ISO 2016 All rights reserved 1BS ISO 7739:2016ISO 7739:2016(E)Dimensions B and C were chosen
23、 to ensure separation of channel 1 and channel 2 signals upon reproduction. Projector manufacturers will probably want to reduce the guard band between channel 1 and channel 2 scanned areas as much as possible so that the projector will be fully compatible with sound records bearing a single channel
24、 and made in accordance with ISO 4243. However, the crosstalk between them should not be less than 20 dB for stereophonic material, and not less than 26 dB for unrelated material.12345Key1 track 12 track 23 reference edge4 direction of film travel5 area scanned by reproducerFigure 1 Two photographic
25、 sound tracks on 16 mm motion-picture prints2 ISO 2016 All rights reservedBS ISO 7739:2016ISO 7739:2016(E)Table 1 DimensionsDimension mm inA ref. 13,71 0,540B 14,35 0,05 0,565 0,002C 14,60 0,05 0,575 0,002D ref. 15,24 0,600E ref. 14,48 0,03 0,570 0,001F max. 0,05 0,002G ref. 1,80 0,071 ISO 2016 All
26、rights reserved 3BS ISO 7739:2016ISO 7739:2016(E) ISO 2016 All rights reservedICS 37.060.20Price based on 3 pagesThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorporate
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