Superimposition / Background Writing
“A sound object (or sequence) is said to be composed when it consists of several
distinct and simultaneous elements.”
Michel Chion, Le Guide des objets sonores, Paris, Buchet/Chastel-INA-GRM, 1983
In synchronous mixing, the sound material is written by layering several sound sources on top of each other. The resulting material—or sound object—is called a composite sound.
Superimposition
Superimposition is the combination of two or more sequences “on top of one another.”
Examples from the electroacoustic repertoire:
Behind the scenes:
Background Writing
Background writing places sound objects, phrases, or musical sequences against a sonic backdrop, creating perspective—much like figures set against a painted background.