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How to add sound to amateur films (1954)

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Optical Sound Practice There are many ways in which you can fit optical sound to a film. Which you choose must depend on your resources and requirements, whether you work in monochrome or colour and the equipment available at the recording studios. Few, if any, studios can offer all the various alternatives, so in the long run you may have little choice of the system to use. Nevertheless it is useful to have a general knowledge of the different possibilities. Negative' Positive The classic way of producing a sound film requires at least three lengths of film in addition to the final copy. You have: 1. The picture negative. 2. The work print or cutting copy which is a silent positive made from the picture negative. 3. The sound negative. 4. The final married print made from both picture negative and sound negative. When many married prints are required, they are called release prints. Production of an optical sound film by the negative-positive process. 1 fe3 4m=P Picture Negative Cutting Copy 55