TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

Fairly soon after the introduction of talkies in the late 1920s, the movie industry settled on using an analogue optical soundtrack on the edge of the film to carry the sound. This was read by the projector and converted to an electrical audio signal. This was a very noisy medium, so in the absence of advanced noise reduction technology such as Dolby A (the cinema equivalent of, and precursor to, the Dolby B and C noise reduction systems on compact cassettes), the situation was eased by sharply cutting the treble response (at around 5kHz). The bass was also cut, which accounts for the characteristic pinched sound of old movies. The recommended system of frequency response tailoring was called 'Academy Sound.'  1, record 1, English, - Academy%20sound

Record number: 1, Textual support number: 1 OBS

Academy aspect ratio: 1.37:1, the aspect ratio for movies used almost exclusively up to the early 1950s.  1, record 1, English, - Academy%20sound

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Son haut perché caractéristique des anciens films parlants qui était le résultat d'un retranchement, sur la partie de la bande portant le signal audio, de certaines fréquences aiguës et basses, afin de réduire les bruits de la bande.  1, record 1, French, - son%20Academy

Record number: 1, Textual support number: 1 OBS

format Academy : [...] format [d'image] (1.37), qui fut le standard du septième art avant le Cinémascope.  2, record 1, French, - son%20Academy

Record 1,  Textual support,  Spanish