1、NORME INTERNATIONALE CEI IEC INTERNATIONAL STANDARD 615953 Premiredition Firstedition 199907 Systmesdenregistrementbande audionumriquemultivoies(DATR), usageprofessionnel Partie3: Fonctionnement24bitspourmdia16bits Multichanneldigitalaudiotaperecorder(DATR), reeltoreelsystem,forprofessionaluse Part3
2、: 24bitoperationfor16bitmedia Numroderfrence Referencenumber CEI/IEC615953:1999Numrosdespublications Depuisle1erjanvier1997,lespublicationsdelaCEI sontnumrotespartirde60000. Publicationsconsolides Lesversionsconsolidesdecertainespublicationsde laCEIincorporantlesamendementssontdisponibles. Parexempl
3、e,lesnumrosddition1.0,1.1et1.2 indiquentrespectivementlapublicationdebase,la publicationdebaseincorporantlamendement1,etla publicationdebaseincorporantlesamendements1 et2. Validitdelaprsentepublication LecontenutechniquedespublicationsdelaCEIest constammentrevuparlaCEIafinquilreflteltat actueldelate
4、chnique. Desrenseignementsrelatifsladatedereconfir mationdelapublicationsontdisponiblesdansle CataloguedelaCEI. Lesrenseignementsrelatifsdesquestionsltudeet destravauxencoursentreprisparlecomittechnique quiatablicettepublication,ainsiquelalistedes publicationstablies,setrouventdanslesdocumentsci des
5、sous: SitewebdelaCEI* CataloguedespublicationsdelaCEI Publiannuellementetmisjour rgulirement (Catalogueenligne)* BulletindelaCEI DisponiblelafoisausitewebdelaCEI* etcommepriodiqueimprim Terminologie,symbolesgraphiques etlittraux Encequiconcernelaterminologiegnrale,lelecteur sereporteralaCEI60050: Vo
6、cabulaireElectro techniqueInternational (VEI). Pourlessymbolesgraphiques,lessymboleslittraux etlessignesdusagegnralapprouvsparlaCEI,le lecteurconsulteralaCEI60027: Symboleslittraux utiliserenlectrotechnique,laCEI60417:Symboles graphiquesutilisablessurlematriel.Index,relevet compilationdesfeuillesind
7、ividuelles, etlaCEI60617: Symbolesgraphiquespourschmas. * Voiradressesitewebsurlapagedetitre. Numbering Asfrom1January1997allIECpublicationsare issuedwithadesignationinthe60000series. Consolidatedpublications ConsolidatedversionsofsomeIECpublications includingamendmentsareavailable.Forexample, editi
8、onnumbers1.0,1.1and1.2refer,respectively,to thebasepublication,thebasepublicationincor poratingamendment1andthebasepublication incorporatingamendments1and2. Validityofthispublication ThetechnicalcontentofIECpublicationsiskept underconstantreviewbytheIEC,thusensuringthat thecontentreflectscurrenttech
9、nology. Informationrelatingtothedateofthereconfirmation ofthepublicationisavailableintheIECcatalogue. Informationonthesubjectsunderconsiderationand workinprogressundertakenbythetechnical committeewhichhaspreparedthispublication,aswell asthelistofpublicationsissued,istobefoundatthe followingIECsource
10、s: IECwebsite* CatalogueofIECpublications Publishedyearlywithregularupdates (Onlinecatalogue)* IECBulletin AvailablebothattheIECwebsite*and asaprintedperiodical Terminology,graphicalandletter symbols Forgeneralterminology,readersarereferredto IEC60050:InternationalElectrotechnicalVocabulary (IEV). F
11、orgraphicalsymbols,andlettersymbolsandsigns approvedbytheIECforgeneraluse,readersare referredtopublicationsIEC60027: Lettersymbolsto beusedinelectricaltechnology ,IEC60417: Graphical symbolsforuseonequipment.Index,surveyand compilationofthesinglesheets andIEC60617: Graphicalsymbolsfordiagrams. * See
12、websiteaddressontitlepage.NORME INTERNATIONALE CEI IEC INTERNATIONAL STANDARD 615953 Premiredition Firstedition 199907 Systmesdenregistrementbande audionumriquemultivoies(DATR), usageprofessionnel Partie3: Fonctionnement24bitspourmdia16bits Multichanneldigitalaudiotaperecorder(DATR), reeltoreelsyste
13、m,forprofessionaluse Part3: 24bitoperationfor16bitmedia Commission Electrotechnique Internationale InternationalElectrotechnicalCommission Pourprix,voircatalogueenvigueur Forprice,seecurrentcatalogue IEC1999Droitsdereproductionrservs Copyrightallrightsreserved Aucunepartiedecettepublicationnepeuttre
14、reproduiteni utilisesousquelqueformequecesoitetparaucunprocd, lectroniqueoumcanique,ycomprislaphotocopieetles microfilms,sanslaccordcritdelditeur. Nopartofthispublicationmaybereproducedorutilizedin anyformorbyanymeans,electronicormechanical, includingphotocopyingandmicrofilm,withoutpermissionin writ
15、ingfromthepublisher. InternationalElectrotechnicalCommission 3,ruedeVarembGeneva,Switzerland Telefax:+41229190300 email:inmailiec.ch IECwebsitehttp:/www.iec.ch CODEPRIX PRICECODE F2 615953CEI:1999 SOMMAIRE Pages AVANTPROPOS .4 Articles 1 Domainedapplication 6 2 Descriptiondelenregistrementdesdonnes
16、6 3 DfinitionsdespistesAetB . 6 AnnexeA(informative)Bibliographie 10615953IEC:1999 3 CONTENTS Page FOREWORD 5 Clause 1 Scope 7 2 Descriptionofdatarecording 7 3 Definitionof“A”and“B”tracks . 7 AnnexA(informative)Bibliography 114 615953CEI:1999 COMMISSIONLECTROTECHNIQUEINTERNATIONALE _ Systmedenregist
17、rementbandeaudionumriquemultivoies(DATR), usageprofessionnel Partie3:Fonctionnement24bitspourmdia16bits AVANTPROPOS 1) LaCEI(CommissionlectrotechniqueInternationale)estuneorganisationmondialedenormalisationcompose delensembledescomitslectrotechniquesnationaux(ComitsnationauxdelaCEI).LaCEIapourobjetd
18、e favoriserlacooprationinternationalepourtouteslesquestionsdenormalisationdanslesdomainesde llectricitetdellectronique.Aceteffet,laCEI,entreautresactivits,publiedesNormesinternationales. Leurlaborationestconfiedescomitsdtudes,auxtravauxdesquelstoutComitnationalintressparle sujettraitpeutparticiper.L
19、esorganisationsinternationales,gouvernementalesetnongouvernementales,en liaisonaveclaCEI,participentgalementauxtravaux.LaCEIcollaboretroitementaveclOrganisation InternationaledeNormalisation(ISO),selondesconditionsfixesparaccordentrelesdeuxorganisations. 2) LesdcisionsouaccordsofficielsdelaCEIconcer
20、nantlesquestionstechniquesreprsentent,danslamesure dupossible,unaccordinternationalsurlessujetstudis,tantdonnquelesComitsnationauxintresss sontreprsentsdanschaquecomitdtudes. 3) Lesdocumentsproduitsseprsententsouslaformederecommandationsinternationales.Ilssontpublis commenormes,spcificationstechniqu
21、es,rapportstechniquesouguidesetagrscommetelsparlesComits nationaux. 4) Danslebutdencouragerlunificationinternationale,lesComitsnationauxdelaCEIsengagentappliquerde faontransparente,danstoutelamesurepossible,lesNormesinternationalesdelaCEIdansleursnormes nationalesetrgionales.Toutedivergenceentrelano
22、rmedelaCEIetlanormenationaleourgionale correspondantedoittreindiqueentermesclairsdanscettedernire. 5) LaCEInafixaucuneprocdureconcernantlemarquagecommeindicationdapprobationetsaresponsabilit nestpasengagequandunmatrielestdclarconformelunedesesnormes. 6)Lattentionestattiresurlefaitquecertainsdeslment
23、sdelaprsenteNormeinternationalepeuventfaire lobjetdedroitsdepropritintellectuelleoudedroitsanalogues.LaCEInesauraittretenuepour responsabledenepasavoiridentifidetelsdroitsdepropritetdenepasavoirsignalleurexistence. LaNormeinternationaleCEI615953attablieparlesouscomit100B:Systmesde stockagedinformati
24、onsmultimdias,vidoetaudio,ducomitdtudes100delaCEI: Systmesetappareilsaudio,vidoetmultimdias. Letextedecettenormeestissudesdocumentssuivants: FDIS Rapportdevote 100B/225/FDIS 100B/232/RVD Lerapportdevoteindiqudansletableaucidessusdonnetouteinformationsurlevoteayant aboutilapprobationdecettenorme. Cet
25、tepublicationatrdigeselonlesDirectivesISO/CEI,Partie3. Lecomitadcidquecettepublicationrestevalablejusquen2005. Acettedate,selondcisionpralableducomit,lapublicationsera reconduite; supprime; remplaceparuneditionrvise,ou amende.615953IEC:1999 5 INTERNATIONALELECTROTECHNICALCOMMISSION _ Multichanneldig
26、italaudiotaperecorder(DATR),reeltoreelsystem, forprofessionaluse Part3:24bitoperationfor16bitmedia FOREWORD 1) TheIEC(InternationalElectrotechnicalCommission)isaworldwideorganizationforstandardizationcomprising allnationalelectrotechnicalcommittees(IECNationalCommittees).TheobjectoftheIECistopromote
27、 internationalcooperationonallquestionsconcerningstandardizationintheelectricalandelectronicfields.To thisendandinadditiontootheractivities,theIECpublishesInternationalStandards.Theirpreparationis entrustedtotechnicalcommittees;anyIECNationalCommitteeinterestedinthesubjectdealtwithmay participateint
28、hispreparatorywork.International,governmentalandnongovernmentalorganizationsliaising withtheIECalsoparticipateinthispreparation.TheIECcollaboratescloselywiththeInternationalOrganization forStandardization(ISO)inaccordancewithconditionsdeterminedbyagreementbetweenthetwo organizations. 2) Theformaldec
29、isionsoragreementsoftheIEContechnicalmattersexpress,asnearlyaspossible,an internationalconsensusofopinionontherelevantsubjectssinceeachtechnicalcommitteehasrepresentation fromallinterestedNationalCommittees. 3) Thedocumentsproducedhavetheformofrecommendationsforinternationaluseandarepublishedinthefo
30、rm ofstandards,technicalspecifications,technicalreportsorguidesandtheyareacceptedbytheNational Committeesinthatsense. 4)Inordertopromoteinternationalunification,IECNationalCommitteesundertaketoapplyIECInternational Standardstransparentlytothemaximumextentpossibleintheirnationalandregionalstandards.A
31、ny divergencebetweentheIECStandardandthecorrespondingnationalorregionalstandardshallbeclearly indicatedinthelatter. 5)TheIECprovidesnomarkingproceduretoindicateitsapprovalandcannotberenderedresponsibleforany equipmentdeclaredtobeinconformitywithoneofitsstandards. 6)Attentionisdrawntothepossibilityth
32、atsomeoftheelementsofthisInternationalStandardmaybethesubject ofpatentrights.TheIECshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights. InternationalStandardIEC615953hasbeenpreparedbysubcommittee100B:Audio,video andmultimediainformationstoragesystems,ofIECtechnicalcommittee100:Audio,vide
33、oand multimediasystemsandequipment. Thetextofthisstandardisbasedonthefollowingdocuments: FDIS Reportonvoting 100B/225/FDIS 100B/232/RVD Fullinformationonthevotingfortheapprovalofthisstandardcanbefoundinthereporton votingindicatedintheabovetable. ThispublicationhasbeendraftedinaccordancewiththeISO/IE
34、CDirectives,Part3. Thecommitteehasdecidedthatthispublicationremainsvaliduntil2005. Atthisdate,inaccordancewiththecommitteesdecision,thepublicationwillbe reconfirmed; withdrawn; replacedbyarevisededition,or amended.6 615953CEI:1999 Systmedenregistrementbandeaudionumriquemultivoies(DATR), usageprofess
35、ionnel Partie3:Fonctionnement24bitspourmdia16bits 1 Domainedapplication LaprsenteNormeinternationalesappliquelutilisationdunedoublepiste16bitsdestine lenregistrementdemotsdedonnes24bitsparvoie. Lebesoinmdiadestockerdesdonnesaudionumriquesavecdesmotsdeplusde16bits delongestapparusurlemarchlasuitedele
36、xistencedeconvertisseursanalogiques/ numriquesayantdesrsolutionssuprieures16bitsetdelintroductiondeconsolesde mixagenumriquesincorporantuntraitementdesignaldersolutionsuprieure16bits. Lesbandesmultipistesnumriques,avecleurnormepossibilitdestockagededonnes, constituentunmdiaidalpourunetellemiseenplac
37、e.Lamthodedcriteicisapplique galementnimportequelautremdiadisposantaumoinsdedeuxpistes. 2 Descriptiondelenregistrementdesdonnes Chaquemotdedonnesde24bitsestrpartientrelesdeuxpistesappariesAetB, laffectationdesbitstantcelleillustrelaFigure1. 23 7 15 0Bit MSB LSB 000 0 0 000 0 0 15 15 PisteA PisteB IE
38、C927/99 Figure1Rpartitiondes24bitssurunepairesdepistesde16bits 3 DfinitionsdespistesAetB Unformatdonnenregistre Npistesparalllessurlabande,et Nahabituellementlamme valeurquelenombredevoiesaudio(dentre).Lenregistrementdesdonnes24bitsdivise pardeuxlenombredevoiesdedonnesetleramne N/2carchaquevoiede24b
39、itsoccupe deuxpistes. Lespistesphysiquesnumrotes1 N/2doiventtreutilisescommepistesA. Lespistesphysiquesnumrotes( N/2+1) N doiventtreutilisescommepistesB. Exemple:Pourlavoie2audio,les16bitslesplussignificatifsserontenregistrssurla pisteAnumro2etles8bitsrestantsserontenregistrssurlapistenumro( N/2+2).
40、 Les8bitslesplussignificatifsdesmotsde16bitssurlespistesBdoiventtrecomplts pardeszros,commecelaestillustrparlaFigure1.615953IEC:1999 7 Multichanneldigitalaudiotaperecorder(DATR),reeltoreelsystem, forprofessionaluse Part3:24bitoperationfor16bitmedia 1Scope ThisInternationalStandardisapplicabletotheus
41、eofa16bittrackpairtorecord24bitdata wordsperchannel. Arequirementformediastoringdigitalaudiodatawithwordswiderthan16bitshasarisenin themarket,influencedbytheavailabilityofA/Dconverterswithresolutionshigherthan16bits, andtheintroductionofdigitalmixingconsolesincorporatingsignalprocessingwithhigher resolutionthan16bits. Digitalmultitracktapes,withtheirenormousdatastoragecapacity,areanidealmediumfor suchanimplementation.Themethoddescribedhereinisalsoapplicabletoanyothermedium withminimumoftwotracks 2 Descriptionofdatarecording Each24bitdatawordisdividedbetweentwopairedtracks“A”and“B
