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
Restoration is the removal or repair of anomalies in a soundtrack that may have resulted from wear and tear or technical errors induced in the audio program since its original production. The process of restoration can be accomplished to differing degrees. A light restoration may include the
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.