BS ISO 7832:2014
Current
The latest, up-to-date edition.
Cinematography. Photoelectric output factor of photographic-type audio-level test films. Measurement and calibration
31-10-2014
Foreword
1 Scope
2 Normative references
3 Terms, definitions, and symbols
4 Method of measurement
5 Method of calibration
6 Calibration procedure
7 Calibrating reproducer
Annex A (normative) - DC and AC calibration
Describes 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.
| Committee |
CPW/36
|
| DocumentType |
Standard
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
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.
| Standards | Relationship |
| ISO 7832:2014 | Identical |
| ISO 2939:2015 | Cinematography — Picture image area on 35 mm motion-picture release prints — Position and dimensions and analogue and digital photographic sound to picture record displacement |
| ISO 6025:2000 | Cinematography — Analogue photographic sound test films, 35 mm and 16 mm — Specifications |
| ISO 4243:1979 | Cinematography — Picture image area and photographic sound record on 16 mm motion-picture release prints — Positions and dimensions |
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