Audio Post Production Knowledge Base

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Sticky Shed Syndrome
Sticky Shed Syndrome results when the binder, the adhesive chemical that binds together the plastic backing and the magnetic oxide of an audiotape, begins to break down due to a chemical reaction with the humidity in the air. This chemical process makes the audiotape sticky, causing squealing,

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

Amplitude
A sound wave moving through the atmosphere pushes air. As the air in front of the wave gets compressed, the air pressure goes up. The magnitude of change in the air pressure from that sound wave is its amplitude. The bigger its amplitude, the louder the wave will sound.