Audio Post Production Knowledge Base

Today's Audio Term: Matrix When audio engineers matrix...

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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.

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

Trigger Tone
A trigger tone is a 12kHz sine wave that was used to "trigger," or turn on, the surround channel of a discrete LCRS (Left channel, Center channel, Right channel, Surround channel) Cinemascope™ print. Early LCRS surround mixes for Cinemascope films contained very little surround