Cinématographie — Réponse spectrale de lecteurs audio avec des pistes sonores analogiques de couleurs sur film de tirage 35 mm

ISO 20859:2005 specifies the spectral response of the photographic audio reproducer light source and receptor as a unit, including any optical filtering that can be interposed.

The analog sound track formats suitable for reproduction using such a reproducer include the cyan dye-only track (without redevelopment of silver) and both conventional and "high magenta" soundtracks (with redevelopment of silver).