Sound is culturally/socially divided into harmony and noise, that is, pleasing or nonpleasing. In the communication model, noise is called static—an auditory or psychological interference in sending the message from sender through the code to the receiver. Aesthetically/psychologically, noise is the nonharmonious combination of two or more sounds; the hearer is pleased by sounds that augment each other’s structures (harmony), and displeased by sounds that interrupt each other’s structures. Physically, since sound is vibrations in various wave-lengths, noise is that combination of vibrations that disturb the rhythm and flow of the waves. Metaphorically, then, “noise” is any superfluous or disturbing interruption in the visual, aural, aesthetic, or cognitive message being sent out from its creator to its recipient. The prevention of it in any form is achieved by the sender’s being sensitive to the underlying harmony or sense of the sent “message”. For example, a guitarist “tunes” his guitar to avoid the “noise" of disharmony; an author “edits” his words to give a clarity to his expression.