Whereas film captures the image of an object, standard audiotape and videotape record continuous wave forms as magnetic impulses that, when played back through a transducer (or audio/video player), reproduce the original recorded sound or image. The epithet Digital
refers to the conversion of analog impulses into a binary form that can be stored digitally in a computer or on a computer disc. The only way to turn such digital information into sound or image would be through an opposite...
