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Audio Post Production Knowledge Base
Bleed Through
Magnetic tape or film stores audio information via metal particles applied to one side of the tape or film. A record head applies a magnetic flux to those particles, which then orient themselves to represent the audio information. A playback head reads the magnetic flux stored on the tape to 
Magneto Optical Disk
A magneto optical disk, or MOD, is a digital data storage medium. Like a hard drive, CD, DVD, and flash drive, it reads and writes digital data. MODs are removable media, separate from the drive mechanism, that are housed in a protective case.
In post-production, MODs primarily serve three
Sync-pop
A sync-pop is a 1kHz tone that is exactly one film frame in duration, used for matching picture and sound negatives together. The sync-pop must occur exactly two seconds (or three feet) before the first frame of picture (FFOP) in a film reel. If the picture negative contains a standard Academy
