Roland GS, or just GS, sometimes expanded as General Standard [1] [2] or General Sound, [1] is a MIDI specification. It requires that all GS-compatible equipment must meet a certain set of features and it documents interpretations of some MIDI commands and bytes sequences, thus defining instrument tones, controllers for sound effects, etc.
In addition to the simpler General MIDI standard, GS defines 98 additional tone instruments, 15 more percussion instruments, 8 more drum kits, 3 effects (reverb/chorus/variation) and some other features.
The Roland SC-55 was the first synthesizer to support the GS standard.
The GS extensions were first introduced and implemented on Roland Sound Canvas series modules, starting with the Roland SC-55 in 1991. The first model supported 317 instruments, 16 simultaneous melodic voices, 8 percussion voices and a compatibility mode for Roland MT-32 (although it only emulated it and lacked programmability of original MT-32) and gained explosive popularity.
In addition to the Sound Canvas series, Roland also provided GS compatibility in its own professional lineup through the JV-30 keyboard and the VE-GS1 expansion board for other JV-series instruments. In addition, GS compatibility is provided in the GM2 specification which Roland helped to create and actively supports.
Some other manufacturers attempted to be compatible to Roland GS, but could not use the GS trademark or samples. In Yamaha XG synthesizers for example the GS implementation was called "TG300B mode". Dream S.A. used unlicensed samples of Roland GS instruments and was used. [3]
The program in every individual bank will align with the 128 in GM's instrument patch map. The Sound Canvas used additional pair of controllers, cc#0 and cc#32, to specify up to 16384 (128*128) 'variations' of each melodic sound defined by General MIDI. Typically, cc#32 (Bank Select LSB) was used to select a family (i.e. 1 - SC-55, 2 - SC-88 etc.) then cc#0 (Bank Select MSB) was used to set a particular variation bank.
MIDI channel 10 is used for drums by default like in General MIDI, but they are accessible on any channel through the use of SysEx. Only 2 different drum kits can be used at a time. There are ten different kits in total:
Newer models of Roland Sound Canvas and other GS-compatible Roland synthesizers features additional kits not included in the base GS sound set; these include kits based on various Roland drum machines such as the TR-909, CR-78 and TR-707, as well as various percussion kits comprising both traditional and modern percussions.
There were 16 additional drum notes that span Drum Kits 1 to 49:
Additional controller events included in SC-55 and SC-88 were:
There were messages that allowed the user to turn the GS mode on/off, to set effects processor parameters, to change EG envelopes etc.
Beginning in 1991, Roland introduced GS support in the majority of its consumer MIDI products.
MIDI is a technical standard that describes a communication protocol, digital interface, and electrical connectors that connect a wide variety of electronic musical instruments, computers, and related audio devices for playing, editing, and recording music.
Digital music technology encompasses the use of digital instruments to produce, perform or record music. These instruments vary, including computers, electronic effects units, software, and digital audio equipment. Digital music technology is used in performance, playback, recording, composition, mixing, analysis and editing of music, by professions in all parts of the music industry.
General MIDI is a standardized specification for electronic musical instruments that respond to MIDI messages. GM was developed by the American MIDI Manufacturers Association (MMA) and the Japan MIDI Standards Committee (JMSC) and first published in 1991. The official specification is available in English from the MMA, bound together with the MIDI 1.0 specification, and in Japanese from the Association of Musical Electronic Industry (AMEI).
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The Roland JX-3P is a synthesizer produced by Roland Corporation of Japan from 1983–1985. The "3P" in its name refers to "Programmable Preset Polyphonic". It is notable as one of the company's first synthesizers to incorporate a MIDI interface.
Keytar is a keyboard instrument similar to a synthesizer or MIDI controller that is supported by a strap around the neck and shoulders, similar to the way a guitar is held.
Yamaha XG is an extension to the General MIDI standard, created by Yamaha. It is similar in purpose to the Roland GS standard.
The Roland MT-32 Multi-Timbre Sound Module is a MIDI synthesizer module first released in 1987 by Roland Corporation. It was originally marketed to amateur musicians as a budget external synthesizer with an original list price of $695. However, it became more famous along with its compatible modules as an early de facto standard in computer music. Since it was made prior to the release of the General MIDI standard, it uses its own proprietary format for MIDI file playback.
A MIDI controller is any hardware or software that generates and transmits Musical Instrument Digital Interface (MIDI) data to MIDI-enabled devices, typically to trigger sounds and control parameters of an electronic music performance. They most often use a musical keyboard to send data about the pitch of notes to play, although a MIDI controller may trigger lighting and other effects. A wind controller has a sensor that converts breath pressure to volume information and lip pressure to control pitch. Controllers for percussion and stringed instruments exist, as well as specialized and experimental devices. Some MIDI controllers are used in association with specific digital audio workstation software. The original MIDI specification has been extended to include a greater range of control features.
A sound module is an electronic musical instrument without a human-playable interface such as a piano-style musical keyboard. Sound modules have to be operated using an externally connected device, which is often a MIDI controller, of which the most common type is the musical keyboard. Another common way of controlling a sound module is through a sequencer, which is computer hardware or software designed to record and playback control information for sound-generating hardware. Connections between sound modules, controllers, and sequencers are generally made with MIDI, which is a standardized interface designed for this purpose.
A wind controller, sometimes referred to as a wind synthesizer, is an electronic wind instrument. It is usually a MIDI controller associated with one or more music synthesizers. Wind controllers are most commonly played and fingered like a woodwind instrument, usually the saxophone, with the next most common being brass fingering, particularly the trumpet. Models have been produced that play and finger like other acoustic instruments such as the recorder or the tin whistle. The most common form of wind controller uses electronic sensors to convert fingering, breath pressure, bite pressure, finger pressure, and other gesture or action information into control signals that affect musical sounds. The control signals or MIDI messages generated by the wind controller are used to control internal or external devices such as analog synthesizers or MIDI-compatible synthesizers, synth modules, softsynths, sequencers, or even non-instruments such as lighting systems.
The Roland Sound Canvas lineup is a series of General MIDI (GM) based pulse-code modulation (PCM) sound modules and sound cards, primarily intended for computer music usage, created by Japanese manufacturer Roland Corporation. Some models include a serial or USB connection to a personal computer.
The Roland SC-55 is a GS MIDI sound module released in 1991 by Roland. The SC-55 was the first sound module to incorporate the new General MIDI standard. It was the first in the Roland Sound Canvas series.
General MIDI Level 2 or GM2 is a specification for synthesizers which defines several requirements beyond the more abstract MIDI standard and is based on General MIDI, GS extensions, and XG extensions. It was adopted in 1999 by the MIDI Manufacturers Association (MMA).
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