Editing MIDI (section)

===Tuning standard===
{{Main|MIDI tuning standard}}
Most MIDI synthesizers use [[equal temperament]] tuning. The [[MIDI tuning standard]] (MTS), ratified in 1992, allows alternate tunings.<ref name="MTS">"[http://www.microtonal-synthesis.com/MIDItuning.html The MIDI Tuning Standard] {{webarchive|url=https://web.archive.org/web/20121118195344/http://www.microtonal-synthesis.com/MIDItuning.html |date=18 November 2012 }}". ''microtonal-synthesis.com''. n.p. n.d. Web. 17 August 2012</ref> MTS allows [[Microtonal music|microtunings]] that can be loaded from a bank of up to 128 patches, and allows real-time adjustment of note pitches.<ref>{{cite web |url=http://www.midi.org/techspecs/midituning.php |title=MIDI Tuning Messages |publisher=MIDI Manufacturers Association |date=17 August 2012 |archive-url=https://web.archive.org/web/20121130223728/http://www.midi.org/techspecs/midituning.php |archive-date= 30 November 2012 }}</ref> Manufacturers are not required to support the standard. Those who do are not required to implement all of its features.<ref name="MTS" />