Abstract: A method for playback of film with an analog optical sound track the method comprises the steps of forming an image of only said analog optical sound track. Storing the image and representing part of the stored image as a spatial image. Processing the spatial image to form a median value and converting the median value of the spatial image to a signal representative of an audio signal represented in said sound track. Repeating the representing and processing steps to form median values for all of the image of the analog optical sound track.

Abstract: An apparatus for playback of an analog optical sound track comprises a transport means for transporting a film including an analog optical sound track. A scanning means generates an image signal of only the analog optical sound track as gray scale values. An alignment means aligns the scanning means such that the image signal of only the analog optical sound track substantially fills a width of the scanning means. A processor processes the image signal to form an audio output signal.

Abstract: An apparatus and method for analog optical sound track playback comprises a means for transporting a film including an analog optical sound track and audio representative envelope. A scanning means forms a display image signal representative of the analog optical sound track with the audio representative envelope. An alignment means aligns the scanning means such that only half of the analog optical sound track with the audio representative envelope form the display image signal and substantially fill a width of the scanning means. A processor processes the image signal representing only half of the analog optical sound track and the audio representative envelope and forms therefrom an audio output signal.

Abstract: An apparatus for playback of an analog optical sound track comprises a transport means for transporting a film including an analog optical sound track. A scanning means generates an image signal of only the analog optical sound track. An alignment means aligns the scanning means such that the image signal of the analog optical sound track substantially fills a width of the scanning means. A processor processes the image signal to form an audio output signal.