imported>Kvng: std acro def

2025-04-28T13:25:38Z

std acro def

New page

{{Short description|Technical specification extending MIDI}}

'''MIDI Show Control''' ('''MSC'''), is a real-time [[System Exclusive]] extension of the international [[Musical Instrument Digital Interface]] (MIDI) standard. MSC enables all types of [[entertainment]] equipment to communicate with each other through the process of [[show control]].<ref>{{Cite book|title=Show networks and control systems|last=John|first=Huntington|isbn=9780692958735|edition= Second|location=Brooklyn, N.Y.|oclc=1021889623|date = 2017-11-02}}</ref>

The MIDI Show Control protocol is a [[technical standard]] ratified by the [[MIDI Manufacturers Association]] in 1991 which allows entertainment control devices to talk with each other and with computers to perform show control functions in live and prerecorded entertainment applications. Just like musical MIDI, MSC does not transmit the actual show media - it simply transmits digital information about a multimedia performance.

== How MSC works ==

When any [[Cue (theatrical)|cue]] is called by a user (typically a ''[[stage manager]]'') and/or preprogrammed timeline in a show control software application, the ''[[show control]]ler'' transmits one or more MSC messages from its 'MIDI Out' port. A typical MSC message sequence is:

# ''the user has just called a cue''
#''the cue is for lighting device 3''
# ''the cue is number 45.8''
#''the cue is in cue list 7''

MSC messages are serially transmitted in the same way as musical messages and are fully compatible with all conventional MIDI hardware, however many modern MSC devices now use Ethernet communications for higher bandwidth and the flexibility afforded by networks. Other performance parameters are also transmitted such as lighting desk submaster settings using MSC ''SET'' messages.

All cues that a media control device is capable of playing are assigned MSC messages within the Show Controller's cue list and they are transmitted from its 'MIDI Out' port at the appropriate show time, depending on the actions of the user and the show controller's internally timed sequences.

All MSC compatible instruments follow the MSC specification and thus transmit identical MSC messages for identical MSC events such as the playing of a certain cue on the media controller. Since they follow a published standard, all MSC devices can communicate with and understand each other, as well as with computers that have been programmed to understand MSC messages using the MSC Command Set.<ref>{{cite news |title=Midi show control specification |url=http://www.richmondsounddesign.com/docs/midi-show-control-specification.pdf |accessdate=14 June 2018}}</ref> All MSC compatible instruments have a built-in MIDI interface and many now follow one of the various MIDI-over-Ethernet protocols.

== History ==

To create the MSC spec, [[Charlie Richmond (inventor)|Charlie Richmond]] headed the [[USITT]] MIDI Forum on their [[Callboard Network]] in 1990, which included developers and designers from the theatre sound and lighting industry from around the world. It is believed that this was the first international standard to be developed without a single physical meeting of the participants and the full transcript of the discussion is available via External Links, below. This Forum created the MSC standard between January and September 1990. This was ratified by the [[MIDI Manufacturers Association]] (MMA) in January 1991, and the [[Japan MIDI Standards Committee]] (JMSC) later that year, becoming a part of the standard MIDI specification in August 1991. The first show to fully use the MSC specification was the [[Magic Kingdom Parade]] at [[Walt Disney World]]'s [[Magic Kingdom]] in September 1991.

== MIDI Show Control software ==
{| class="wikitable"
|-
! Software
! Platform
! Developer
|-
| Martin M-PC
| Windows
| [[Martin Professional]]
|-
| SM-Designer
| Windows
| Richmond Sound Design
|-
| Navigator
| Windows
| Tait Towers
|-
| ABEdit
| Windows
| Richmond Sound Design
|-
| ShowMan
| Windows
| Richmond Sound Design
|-
| ABShowMaker
| macOS
| Richmond Sound Design
|-
| IMEASY
| Windows, macOS
|
|-
| Manager
| Windows
|
|-
| SFX
| Windows
|
|-
| V-Control
| Windows, macOS, Linux
|
|-
| showcontrolpro (scp)
| Windows, macOS
|
|-
| SAMSC
| macOS
|
|-
| [[Pure Data]]
| Windows, macOS, Linux
|
|-
| [[Max (software)|MAX/MSP]]
| Windows, macOS, Linux
|
|-
| TRAX
| macOS
|
|-
| GType
| Windows
|
|-
| ShowFlow
| Windows
|
|-
| [[QLab]]
| macOS
| [[Figure 53]]
|-
| TJShow
| Windows
|
|-
| CUE Showcontrol
| Windows
|
|-
| PCStage
| Windows
|
|-
| CSC
| Windows
|
|-
| MultiPlay
| Windows
|
|-
| [[Isadora (software)|Isadora]]<ref>{{cite web | url=https://troikatronix.com/isadora-features/cueing/ | title=Troikatronix : Isadora }}</ref>
| Windows, macOS
| Troikatronix
|-
| Watchout
| Windows
|
|-
| Show Cue Systems
| Windows
|
|-
| Jands Vista
| Windows, macOS
|
|-
| ChamSys MagicQ
| Windows, macOS, Linux
|
|}

==See also==
* [[Sound design]]
* [[Theatre lighting]]

== References ==
{{Reflist}}

== External links ==

* [https://web.archive.org/web/20150520120852/http://www.midi.org/ MIDI Manufacturers Association]
* [http://www.richmondsounddesign.com/docs/midi-show-control-specification.pdf MSC 1.0 PDF] (still a valid subset, is now superseded by V1.1)
* [http://www.richmondsounddesign.com/show-control-list.html The Show Control Mailing List] subscription page.
* [http://www.richmondsounddesign.com/pdf/MSC.pdf Creating the MIDI Show Control Spec on the USITT Callboard Forum in 1990-2]

{{DEFAULTSORT:Midi Show Control}}
[[Category:Computer file formats]]
[[Category:Digital media]]
[[Category:MIDI standards]]

MIDI Show Control - Revision history

imported>Kvng: std acro def