The Influence of Sprocket Holes upon the Development of Adjacent Sound-Track Areas
An unmodulated sound-track shows 96-cycle modulation on development. The effect is a maximum at the edge of the sprocket holes and diminishes exponentially for a distance of approximately 30 mils into the sound-track. A film modulated by a constant frequency shows 96-cycle amplitude and frequency modulation over the same area. Both effects are introduced principally during processing of the film. A film having no sprocket holes on the sound-track side is entirely free of these effects. The conclusion is that processing standards in many laboratories require improvement to eliminate distortions of this type.
- Print ISSN
- 0097-5834
- Published
- 1937-03
- Content type
- Original Research
- DOI
- 10.5594/J08558
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