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IEC 62574-ed.2.0
Audio, video and multimedia systems - General channel assignment of multichannel audio
Translate name
STANDARD published on 31.1.2020
The information about the standard:
Designation standards: IEC 62574-ed.2.0
Publication date standards: 31.1.2020
SKU: NS-983483
The number of pages: 98
Approximate weight : 325 g (0.72 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Annotation of standard text IEC 62574-ed.2.0 :
IEC 62574:2020 is available as IEC 62574:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 62574:2020 specifies the general channel assignment and the metadata for multichannel audio format. This document, with its channel mapping and labelling content, provides the unified usage of channel assignments for source devices, digital audio interfaces and sink devices. The general channel assignment excludes the specification of the exact position of each loudspeaker. The metadata has the exact position of each loudspeaker; however, since the position of the loudspeaker is different in various surround sound formats, the position information of the metadata is not standardized. It is aimed at consumer applications; it is not targeted at theatrical environments. Up to 65 labels for loudspeaker positions and 15 labels for loudspeakers on the display are specified, which can be used for all current multichannel audio formats. The channel assignment concept is room centric and listener centric. This general channel assignment specifies the position of the loudspeaker as seen from the listener. IEC 62574:2020 cancels and replaces the first edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) model of channel assignment spaces is changed; b) definition of channel maps and labels is changed; c) metadata is newly specified; d) channel maps and labels from the first edition are included in Annex A. IEC 62574:2020 est disponible sous forme de IEC 62574:2020 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis ledition precedente. LIEC 62574:2020 specifie laffectation generale des voies et des metadonnees pour le format audio a voies multiples. Le present document, avec son contenu de mapping et detiquetage des voies, uniformise la pratique de laffectation des voies pour les dispositifs sources, les interfaces audionumeriques et les dispositifs recepteurs. Laffectation generale des voies exclut la specification de la position exacte de chaque haut-parleur. Les metadonnees contiennent la position exacte de chaque haut-parleur; leur information de position nest toutefois pas normalisee, car la position du haut-parleur est differente dans les divers formats dambiophonie. Il est destine aux applications grand public et non aux salles de spectacle. Jusqua 65 etiquettes de positions de haut-parleurs et 15 etiquettes pour les haut-parleurs sur laffichage sont specifiees, lesquelles peuvent etre utilisees pour tous les formats audio a voies multiples actuels. Le concept daffectation des voies est centre sur la piece et centre sur lauditeur. Cette affectation generale des voies specifie la position des haut-parleurs telle quelle est percue par lauditeur. LIEC 62574:2020 annule et remplace la premiere edition parue en 2011. Cette edition constitue une revision technique. Cette edition inclut les modifications techniques majeures suivantes par rapport a ledition precedente: a) le modele spatial daffectation des voies est modifie; b) la definition des mappings ou affectations des voies et leurs etiquettes est modifiee; c) les metadonnees sont nouvellement specifiees; d) les mappings ou affectations des voies et leurs etiquettes de la premiere edition sont inclus dans lAnnexe A.
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