Academy Curve

(from the article `motion-picture technology`) In monaural systems, a treble cut is employed in accordance with the Standard Electrical Characteristic of 1938, or Academy Curve, so that ...
Found on http://www.britannica.com/eb/a-z/a/9

Academy Curve

An intentional roll-off in a theatrical system's playback response above ~2kHz (to -18dB at 8kHz) to minimize noise in mono optical tracks. Some (many) transfers to home video of mono movies have neglected to add the Academy filter during transfer, giving many old movies a screechy sound they were never intended to have. A few home processors have ...
Found on http://www.encyclo.co.uk/local/21058
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