Loop Projectors and Optical Sound

Author(s): Frank P. Brackett ; Paul Galanis ; Armand Paul ; William Newbern ; Douglas Fletcher
Publisher: Society of Motion Picture and Television Engineers
Publication Date: 1 October 1969
Conference Location: Los Angeles, CA, USA
Conference Date: 2 October 1969
Page(s): 96 - 109
ISBN (Paper): 978-1-61482-902-7
DOI: 10.5594/M00931



The technical processing specifications for super 8 optical sound along with the characteristics of the sound system in the Technicolor loop cartridge projector is described. The channels available for preparing super 8 from various types of negatives (65mm, 35mm, 16mm sizes and 133, 185 and other aspect ratios) are discussed in detail. The use of super 8 in education, the capability film has to increase visual literacy and reduce the signal-to-noise ratio in the process of transmission of learning sequences are outlined. The situation regarding optical or magnetic, sound film standards by markets and equipment trends are reviewed. A live on-screen super 8 comparison to 16mm is presented.