BS ISO BRITISH STANDARD 22234:2005 Cinematography Relatiye and absolute sound pressure levels for motion-picture multi-channel sound systems - Measurement methods and levels applicable to analog photographic film audio, digital photographic film audio and D-cinema audio ICS 37.060.99 BSi NOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTEDBY COPYRIGHTLAW British Standards BSISO22234:2005 National foreword This British Standard reproduces verbatim IS0 22234:2005 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee CPW/36, Cinematography, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled "International Standards Correspondence Index", or by using the"Search" facility of theBSIElectronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not ofitself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii and i, a blank page, pages 1 to 9 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. This British Standard was Amendments issued sincepublication published under the authority of the Standards Policy and Amd. No. Date Comments Strategy Committee on 30June 2006 BSI 2006 ISBN0580488284 BSISO22234:2005 INTERNATIONAL ISO STANDARD 22234 First edition 2005-11-15 Cinematography Relative and absolute sound pressure levels for motion-picture multi-channel sound systems Measurement methods and levels applicable to analog photographic film audio, digital photographic film audio and D-cinema audio Cinematographie-Niveaux de pression sonore relatifs et absolus pour les systemes de films cinematographiques sonores multicanaux Methodes demesureetniveauxapplicablesauxfilms sonores photographiques analogiques,aux films sonoresphotographiques numeriques et a I'audio de D-cinema Referencenumber ISO 22234:2005(E) i BSISO22234:2005 Foreword IsO (the International 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 has been International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2 The main task of technical committees is to prepare International Standards. 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 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. ISO22234waspreparedbyTechnicalCommitteeISO/TC36,Cinematography ii blank BSISO 22234:2005 Cinematography Relative and absolute sound pressure levels for motion-picture multi-channel sound systems Measurement methods and levels applicable to analog D-cinema audio 1 Scope This International Standard sp