Film
A film, also called a movie, motion picture, theatrical film, or photoplay, is a series of still images that, when shown on a screen, create the illusion of moving images. (See the glossary of motion picture terms.)
Sound
In physics, sound is a vibration that typically propagates as an audible wave of pressure, through a transmission medium such as a gas, liquid or solid.
Television
Television (TV) is a telecommunication medium used for transmitting moving images in monochrome (black and white), or in colour, and in two or three dimensions and sound. The term can refer to a television set, a television program ("TV show"), or the medium of television transmission. Television is a mass medium for advertising, entertainment and news.
Sound
You know the sound of two hands clapping; tell me, what is the sound of one hand?
Hakuin Ekaku (1686-1769). The phrase is a Kōan, an irrational comment used in Zen Buddhism in order to assist practitioners in reaching enlightenment.
Film
A good opening and a good ending make for a good film provide they come close together.
Federico Fellini, [Recipe for a Good Film], a Fellini Lexicon, (1992).
Recording
For me, the most important thing is the element of chance that is built into a live performance. The very great drawback of recorded sound is the fact that it is always the same. No matter how wonderful a recording is, I know that I couldn't live with it -- even of my own music -- with the same nuances forever.
Aaron Copland; quoted in Classic Essays on Twentieth-Century Music, ISBN 0028645812.