Syncronization Notes

Syncronization Notes


• Definition of Synchronization - To synchronize means to move or operate something in unison with something else - to cause a coincidence in time
• 1 Sprocket = 1/4 of a frame
• What are the two methods audio is recorded to be in sync with film?
• Using light (optically)
• Using magnets (magnetic)
• What are at least 2 issues with optical soundtracks?
• Dirty or out-of-focus optics on recorder causing un-sharp negatives
• Printed-in dirt and abrasions on sound negative due to careless handling of film
• Fog on sound track negative due to dirty lens, improperly stored film, light leak in recorder, or developing problems
• Sound track position relative to the edge of the film can get out of alignment
• In addition, the optical mono track itself suffered from a curtailed high frequency response and an inherent hiss
• List 4 differences between optical and magnetic film production.
• Magnetic tape can be played back with practically no deterioration of sound quality or increase in background noise
• Magnetic tape reduces the cost of sound-film production
• Magnetic tape has more dynamic range and better frequency response
• Magnetic tape allows the producer to add sound quickly and economically and monitor it immediately
• Optical photographic sound is usually more economical than the magnetic sound if a large number of prints are required
• With optical there is no longer danger of accidentally erasing the sound track

• Which is more advanced - Category 1 or 2? And do we need one, both, or the other for devices to be in sync?
• Category 1 is just metronome; Category 2 is when
• Category 2 is more advanced
• Need BOTH to synchronize audio/video

• SMPTE (VITC {Vertical Interval Time Code} [on video tape only], {Longitudinal Time Code} [Audio Signal]
• MIDI Time Code (MTC)
• MIDI Beat Clock

• Category 1 - Very simple
• Resolved - machines running at the same speed
• Synchronized -...

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