INTERNATIONAL ISO STANDARD 8622 Second edition 1998-03-15 Cinematography -- Magnetic sound records on 70 mm motion-picture release prints with magnetic stripes - A-chain reproduction characteristics Cinematographie - Enregistrements sonores magnetiques sur copies d'exploitation sur film 70 mm a pistes magnétiques - Caracteristiques de transfert de la chaine A ISO Reference number ISO 8622:1998(E) No reproduction or networking permitted without license from IHS Not for Resale ISO 8622:1998(E) Foreword IsO (the International Organization for Standardization) is a worldwide 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 on that committee. Internationai organizations, governmental and non- governmental., in liaison with iSO, also take part in the work. IsO collab- orates closely with the International Electrotechnicai Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard 1SO 8622 was prepared by Technical Committee ISO/TC 36, Cinematography. This second edition cancels and replaces the first edition (ISO 8622:1990), clause 2 and subclause 3.5 (note 2 added) of which have been technically revised. Annex A forms an integral part of this International Standard. 1SO1998 All rights reserved. Uniess otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing frorm the publisher. International Organization for Standardization Case postale 56 . CH-1211 Geneve 20 . Switzerland Internet [email protected] X.400 C=ch; a=400net; p=iso; 0=isocs; S=central Printed in Switzerland se from IHS Not for Resale INTERNATIONAL STANDARD @ISO ISO 8622:1998(E) Cinematography Magnetic sound records on 70 mm motion-picture release prints with magnetic stripes A-chain reproduction characteristics 1 Scope 3 Definitions This International Standard specifies the A-chain electrical For the purposes of this International Standard, the following frequency response characteristics for magnetic sound repro- definitions apply. duction in motion-picture control rooms and indoortheatres.It is also intended for use, in conjunction with iso 2969, in the 3.1 complete sound reproduction system: A system standardization of recording monitor and reproduction charac- used for the playback of motion-picture records (see figure 1) teristics of motion-picture sound in studio dubbing theatres, in dubbing theatres, review rooms, and indoor theatres; by reviewroomsand indoortheatres. convention it consists of an"A-chain and a B-chain"" This International Standard covers that part of the motion- 3.2 type I sound track: A sound record with a charac- picture sound system from the transducer to the input ter- minals of the main fader, and should be read in conjunction teristic normally only used with monophonic photographic motion-picture prints. with ISO 8590, which defines the recorded characteristics for 35 mm and 70 mm magnetic striped prints. 3.3 type Il sound track: A sound record which is intended for playback over a theatre B-chain system aligned to curve N of ISO2969. 2 Normative references 3.4 type Ill sound track: A monophonic or stereophonic The following standards contain provisions which, through magnetic or photographic sound record which is intended for reference in this text, constitute provisions of this International playback over a theatre B-chain system aligned to curve X of Standard. At the time of publication, the editions indicated ISO2969. were valid. All standards are subject to revision, and pa