Attenuation

Reduction in magnitude of a physical quantity such as sound, either by electronic means (e.g. a fader, attenuator or potentiometer on a mixer, or the volume control adjustment of an amplifier), or by a physical barrier, including various absorptive materials (see absorption coefficient). Attenuation is usually measured in decibels. See also: Filter.

Compare: Absorption, Amplification, Compression, Damping, Fade, Gain, Resonance, Sound Insulation.