Editing MIDI controller (section)

===Control surfaces===
Control surfaces are hardware devices that provide a variety of controls that transmit real-time controller messages. These enable software instruments to be programmed without the discomfort of excessive mouse movements,<ref name="WalkerControl">Walker, Martin. "[http://www.soundonsound.com/sos/oct01/articles/pcmusician1001.asp Controlling Influence] {{webarchive|url=https://web.archive.org/web/20120110112533/http://www.soundonsound.com/sos/oct01/articles/pcmusician1001.asp |date=2012-01-10 }}". ''Sound On Sound''. SOS Publications. Oct 2001. Print.</ref> or adjustment of hardware devices without the need to step through layered menus. Buttons, sliders, and knobs are the most common controllers provided, but [[rotary encoder]]s, [[transport controls]], joysticks, [[ribbon controller]]s, vector touchpads in the style of Korg's [[Kaoss pad]], and optical controllers such as Roland's [[D-Beam]] may also be present. Control surfaces may be used for mixing, sequencer automation, turntablism, and lighting control.<ref name="WalkerControl" />