1、BS ISO 7739:2016 Cinematography Two-track photographic analogue sound records on 16 mm motion- picture prints Positions and width dimensions BSI Standards Publication WB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 7739:2016 BRITISH STANDARD National foreword This British Standard is
2、the UK implementation of ISO 7739:2016. The UK participation in its preparation was entrusted to Technical Committee CPW/36, Cinematography. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessa
3、ry provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016. Published by BSI Standards Limited 2016 ISBN 978 0 580 91746 2 ICS 37.060.20 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard
4、 was published under the authority of the Standards Policy and Strategy Committee on 31 July 2016. Amendments issued since publication Date Text affectedBS ISO 7739:2016 ISO 2016 Cinematography Two-track photographic analogue sound records on 16 mm motion-picture prints Positions and width dimension
5、s Cinmatographie Enregistrement de deux pistes sonores optiques analogues sur copies dexploitation cinmatographiques 16 mm Positions et dimensions en largeur INTERNATIONAL STANDARD ISO 7739 Second edition 2016-07-01 Reference number ISO 7739:2016(E)BS ISO 7739:2016ISO 7739:2016(E)ii ISO 2016 All rig
6、hts reserved COPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in Switzerland All 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
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8、rightiso.org www.iso.orgBS ISO 7739:2016ISO 7739:2016(E)Foreword iv 1 Scope . 1 2 Normative references 1 3 Positions and dimensions . 1 4 Sound records 1 5 Picture-sound displacement 1 6 Track usage 1 ISO 2016 All rights reserved iii Contents PageBS ISO 7739:2016ISO 7739:2016(E) Foreword ISO (the In
9、ternational Organization for Standardization) is a worldwide 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 h
10、as been established has the right to be represented 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
11、 standardization. The procedures used to develop this 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 a
12、ccordance with the editorial rules of the ISO/IEC Directives, 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. De
13、tails of any patent rights identified during the development 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
14、 endorsement. For an explanation on the meaning of ISO specific 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 information The committee
15、 responsible for this document is ISO/TC 36, Cinematography. 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 ST ANDARD ISO 7739:2016(E) Cinematography Two-track photograp
16、hic analogue sound records on 16 mm motion-picture prints Positions and width dimensions 1 Scope This 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 ar
17、ea scanned by the sound reproducer. 2 Normative references The following 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 refe
18、renced document (including any amendments) applies. ISO 4243, Cinematography Picture image area and photographic sound record on 16 mm motion-picture release prints Positions and dimensions 3 Positions and dimensions The positions and dimensions of the two sound records shall be as shown in Figure 1
19、 and given in Table 1. In all other respects, the sound records shall comply with ISO 4243. 4 Sound records 4.1 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
20、nearest the outer edge of the film, as shown in Figure 1. 4.3 The septum 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 di
21、splacement The picture-sound displacement shall be as specified in ISO 4243. 6 Track usage The 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 use
22、d for the left (as viewed from the auditorium) loudspeaker channel and track 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 r
23、ights reserved 1BS ISO 7739:2016ISO 7739:2016(E) Dimensions B and C were chosen 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
24、 projector will be fully compatible with sound records bearing a single channel 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. 1 2 3 4 5 Key 1 track 1 2 track 2 3 refer
25、ence edge 4 direction of film travel 5 area scanned by reproducer Figure 1 Two photographic sound tracks on 16 mm motion-picture prints2 ISO 2016 All rights reservedBS ISO 7739:2016ISO 7739:2016(E) Table 1 Dimensions Dimension mm in A ref. 13,71 0,540 B 14,35 0,05 0,565 0,002 C 14,60 0,05 0,575 0,00
26、2 D ref. 15,24 0,600 E ref. 14,48 0,03 0,570 0,001 F max. 0,05 0,002 G ref. 1,80 0,071 ISO 2016 All rights reserved 3BS ISO 7739:2016ISO 7739:2016(E) ISO 2016 All rights reserved IC S 37.060.20 Price based on 3 pagesThis page deliberately left blankBSI is the national body responsible for preparing
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