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Buzz Track: Difference between revisions
Added categories from "Test Film" article.
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'''Buzz Track''' is a [[test film]] used to align the lateral position of the film in relation to the optical sound pickup. | '''Buzz Track''' is a [[test film]] used to align the lateral position of the film in relation to the optical sound pickup. | ||
Two square frequencies are printed to the left and right of the optical track. The lateral guide roller is adjusted so that neither frequency is audible. '''Consult your equipment manual for instruction on this adjustment.''' The goal of this adjustment is to avoid picking up non soundtrack noise such as image, DTS timecode, or sprockets. | Two square frequencies are printed to the left and right of the optical track. The lateral guide roller is adjusted so that neither frequency is audible. '''Consult your equipment manual for instruction on this adjustment.''' The goal of this adjustment is to avoid picking up non-soundtrack noise such as image, DTS timecode, or sprockets. | ||
On some older mono pickups with wider slits, or when using a buzz track film that has shrunken slightly, it may be impossible to completely eliminate the buzz track frequencies. In this case, split the difference so that both frequencies are as quiet as possible. | On some older mono pickups with wider slits, or when using a buzz track film that has shrunken slightly, it may be impossible to completely eliminate the buzz track frequencies. In this case, split the difference so that both frequencies are as quiet as possible. | ||
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As with all sound test films, a long loop or a 50-100' length of test film run reel to reel is very helpful. As a splice passes through, the film will take a moment to settle back in to place, making a very short or worn loop an imprecise and frustrating tool. | As with all sound test films, a long loop or a 50-100' length of test film run reel to reel is very helpful. As a splice passes through, the film will take a moment to settle back in to place, making a very short or worn loop an imprecise and frustrating tool. | ||
[[Category:Tools]] | |||
[[Category:Film prints]] | |||
[[Category:Projectors]] | |||
[[Category:Showmanship]] | |||
[[Category:Troubleshooting]] | |||