A New Blooping Device
George Lewin · Journal of the Society of Motion Picture Engineers · 1947
This paper describes a method of automatically silencing the splices on work prints used for rerecording. Holes are punched in the picture area of the sound track by means of a convenient foot-operated punch, at a fixed distance from each splice. These holes then serve to operate a switch in the rerecording head so that the sound output is momentarily cut off while the splice is passing the scanning beam.