A control message within the MIDI specification that changes the pitch of a synthesizer in response to the movement of a lever or pitch bend wheel.
Plug-In An application that runs within a parent application and adds functionality. In digital audio, plugins have become ubiquitous, with several manufactures providing standards for developers to write plugins for various platforms. These include TDM, VST, DirectX, Audiosuite and MAS and cover functions as diverse as reverb, dynamics, time based effects, EQ, limiting, dither, guitar amplifier emulation, virtual synthesizers and more.
(See MIDI)