Audio Post Production Knowledge Base

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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

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.

Ornament Sound Experiments
The 1932 film Ornament Sound Experiments, created by experimental filmmaker Oskar Fischinger, utilized the optical sound track in a very unique way. Using precise graphical icons in place of the usual waveforms in the soundtrack area of the film, a "synthesized," or "pure" sound, as