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MOOD MUSIC. Music accompanying the film and enhancing the presentation ... ... ... ... ... 110
NOISE REDUCTION BIAS. Slow variations in the density or width of an optical sound track, introduced to minimise noise due to scratches and dust 58
NON-SYNC. Records reproduced without provision for precise synchronisation with the film 42
OPTICAL RECORDING. Sound recorded photographically along one margin of a film so that more or less light passes through the film 42
OUTPUT. Electrical impulses delivered by an apparatus 1 1
PADDING-OUT RESISTOR. A resistor used for preventing one part of a circuit (e.g., the volume control for a pick-up) from adversely affecting another part of the circuit (e.g., a second pick-up) ... 18
PICK-UP. A device using a needle or stylus to follow the waviness in the groove of a gramophone record and so generate corresponding electrical impulses 41
PILOT COMMENTARY. A shot-by-shot description of a film, recorded as a timing guide for subsequent recording of a commentary free from projector noise ... ... ... ... ... ... 77
PINCH ROLLER. A roller holding wire or tape in firm contact with the capstan of a magnetic recorder 69
POST-SYNCHRONISATION. The recording of synchronised effects or speech after the picture has been shot, processed and edited 60
POTENTIOMETER. Usually a circular device with a projecting spindle. Rotation of the spindle moves a contact connected to the middle one of three connections and so selects more or less of a voltage applied between the other two connections 18
PRINTING SYNCH(RONISATION). The placing of sync, marks so that the sound is 26 frames in advance of the picture, as required for printing and projection 60
RECORD/PLAYBACK HEAD (R/P HEAD). An electromagnet used to produce or detect local magnetisation of the wire, tape or stripe in a magnetic recorder 66
RECORDING LEVEL INDICATOR. A device showing when the recording impulses approach the intensity producing overloading, particularly saturation in a magnetic recorder ... ... ... 70
RELEASE PRINT. One of a large number of identical married prints 55
RESISTANCE. The quality which causes a material to impede the flow of a continuous electrical current. It is measured in ohms ... 13
SATURATION. A condition of a magnetic recording material in which an increase in recording impulse no longer produces a proportional increase in magnetisation ... ... ... ... 69
SCREENED LEAD. A wire covered with insulation and then with a woven braid of further fine wires ... ... II
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