Magnetic Sound on 16-Mm Edge-Coated Film
A small head for magnetic recording and reproduction has been developed to fit within the area of the sound drum of a standard RCA-400, 16-mm projector. The head mounting is such that the projector can be used for the two magnetic functions as well as photographic reproduction. The amplifier modifications included increasing the amplifier gain, using various compensating circuits, decreasing the oscillator distortion and means for eliminating the possibility of leaving the record-playback head in a magnetized state. Two switches, mechanically coupled, have been provided to permit the selection of the desired amplifier function.
- Print ISSN
- 0898-042X
- Published
- 1951-12
- Content type
- Original Research
- DOI
- 10.5594/J01219
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