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Audio Post Production Knowledge Base
theatrical
synchronization
sound theory
restoration
production
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 
Loudness
The perceived quality of sound directly correlated to an increase or decrease in amplitude (volume). Loudness is a highly subjective measurement that varies from person to person and is affected by many factors such as frequency, duration and sound pressure levels (SPL). More objective measurements
Cross-fade
A cross-fade is used to blend one piece of audio into another. During a cross-fade, the volume of the tail of one piece of audio gradually decreases, while the volume of the start of the next piece of audio gradually increases.
