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    "abstract": "As part of their operating-authorization files issued by the Centre National de la Cinématographie, motion-picture theaters must comply with the provisions of the Afnor standard NF S 27001 \"Dimensional characteristics of motion-picture theaters\". This standard defines the \"minimum\" layout conditions for the structural elements of the theatre (screen, seats, projection booth), in order to guarantee the spectator \"correct\" conditions for perceiving the cinematographic show. Since 1954, the Commission Supérieure Technique has been tasked with reviewing plans for the construction or structural modification of theaters, for a provisional clearance to the CNC. Since 1980, this prior review of plans has been complemented by an on-site visit within three months of opening, to validate the theatre's compliance. This visit allows a final technical clearance to be issued to the CNC, which in particular determines the theatre's \"official\" capacity. The characteristics defined in the standard are minimums. They are an \"average\" that guarantees the \"average\" spectator acceptable comfort. During technical visits of theaters by CST engineers (more than 10,000 visits since 1980), it became apparent, in discussions with exhibitors and architects, that these minimum conditions could be exceeded to move towards a notion of \"maximum\" comfort, guaranteeing all spectators the best conditions for perceiving cinematographic works. When the Guide de l'Exploitation was written in 1993, a table of the Afnor standard's values was therefore drawn up, with additional values which, on the same criteria, would define the basis for improved comfort as part of a quality label. This document gives the values of this \"Qualité Confort\" (Quality Comfort) recommendation.",
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    "abstractOriginal": "Les salles de spectacle cinématographique sont soumises, dans le cadre des dossiers d'autorisation d'exercice délivrée par le Centre National de la Cinématographie, au respect des dispositions de la Norme Afnor NF-S 27001 \"Caractéristiques dimensionnelles des salles de spectacle cinématographique\". Cette norme définit les conditions d'implantation \"a minima\" des éléments structurants de la salle (écran, fauteuils, cabine de projection), afin de garantir au spectateur des conditons de perception \"correctes\" du spectacle cinématographique. La Commission Supérieure Technique a pour mission d'étudier sur plans, depuis 1954, les projets de construction ou de modification structurelle des salles, pour un quitus provisoire au CNC. Depuis 1980, cet examen préalable sur plan est complété par une visite sur place dans les trois mois suivant l'ouverture, pour validation de la conformité des salles. Cette visite permet de délivrer un quitus technique définitif au CNC, qui détermine notamment la capacité \"officielle\" de la salle. Ces caractéristiques définies dans la norme sont a minima. Il s'agit d'une \"moyenne\" qui garantissent au spectateur \"moyen\" un confort acceptable. Lors des visites techniques des salles par les ingénieurs de la CST (plus de 10.000 visites depuis 1980), il est apparu, dans le dialogue avec les exploitants et les architectes, que ces conditions a minima peuvent éventuellement être dépassées pour aller vers une notion de confort \"a maxima\", qui garantissent à tous les spectateurs les meilleures conditions de perception des œuvres cinématographiques. Lors de la rédaction du Guide de l'Exploitation, en 1993, il a donc été établi un tableau des valeurs de la norme Afnor, avec indication de valeurs complémentaires qui permettraient, sur les mêmes critères, de définir les bases d'un confort amélioré, dans le cadre d'un label de qualité. Le présent document indique les valeurs de cette recommandation \"Qualité Confort\".",
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    "details": "French-language CST recommendation (2003) giving \"Qualité Confort\" target values for cinema auditoriums alongside the minimum values of AFNOR NF S 27-001: screen-to-row distances, head tilt, row pitch, viewing angle, screen curvature, projection distortion, clearance under the beam and background noise.",
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    "docTitle": "Motion-Picture Theaters – Spectator Comfort",
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