Audio Post Production Knowledge Base

Today's Audio Term: Clash Clash is a peak distortion...

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Modulating Hiss
Modulating hiss refers to noise levels that noticeably rise and fall with program level. For example, a common occurrence of modulating hiss can be heard when noise levels rise around each spoken word of dialogue in a soundtrack.

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

Phasing
Phasing is a steady or variable cancellation of frequencies created when two copies of identical program material are combined with very small variations in timing. The timing variations that cause phasing are up to approximately 1/2 a video frame apart. When the timing variation between the