M00001698
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ISO 7832 2nd Edition, October 1, 2014 Cinematography - Photoelectric output factor of photographic-type audio-level test films - Measurement and calibration
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Availability date: 07/13/2021
Description / Abstract:
This International Standard specifies a method of measuring and
calibrating the photoelectric output factor of single channel
analogue photographic-type audio-level test films in all gauges,
using a calibrating sound reproducer. It is applicable to both
variable area- and variable density-type sound records with a
silver audio track.
It also specifies the performance of a calibrating audio
reproducer.
Calibrated audio-level test films are employed to measure the
precise output level of photographic sound reproducers and the
photoelectric output factor of different sound records. They are
also employed to establish a reference level on a standard program
level meter, should that be appropriate for the installation in
use.