Audio Post Production Knowledge Base

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

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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

Quintaphonic Stereo
Quintaphonic Stereo was a "one hit wonder" technology, with its sole motion picture release, Ken Russell's rock opera Tommy (1975).  Quintaphonic Stereo, as the name implies, is a five-channel stereo presentation that offers full bandwidth stereo surrounds. The speaker placement is

Academy Curve
The Academy curve is a standard playback equalization curve for pre-1975 mono, non-Dolby® optical soundtracks. It functions as the second part of a noise reduction scheme that begins by adding a “pre-emphasis” to audio intended for theatrical playback by boosting its high frequencies. When