For example, a variety of show control sub systems such as sound consoles, sound playback controllers, virtual audio matrices and switchers, video playback systems, rigging controllers, pyro and lighting control systems directly respond to MSC commands. MIDI Show Control (MSC) devices such as show controllers, which transmit messages to aid in the operation and cueing of live theatrical and themed entertainment productions.The sequencer that it controls would stay synchronized with it as the recorder's transport controls are pushed and corresponding MIDI messages transmitted. For example, a recorder may have a feature to index a recording by measure and beat. MIDI Machine Control (MMC) devices such as recording equipment, which transmit messages to aid in the synchronization of MIDI-enabled devices.Sequencers, which store and retrieve MIDI data and send the data to MIDI-enabled instruments in order to reproduce a performance.The performance information (e.g., on which notes or drums are struck, and how hard) is then sent to a module or computer which converts the data into sounds (e.g., samples or synthesized sounds). Traditional instruments such as drums, acoustic pianos, and accordions which are outfitted with sensors and a computer processor which accepts input from the sensors and transmits real-time performance information as MIDI data.There are several devices that do this for the human voice and for monophonic instruments such as flutes, for example. Pitch-to-MIDI converters including guitar/synthesizers analyze a pitch and convert it into a MIDI signal.Electronic musical instruments, including synthesizers, samplers, drum machines, and electronic drums, which are used to perform music in real time and are inherently able to transmit a MIDI data stream of the performance.Percussion controllers such as the Roland Octapad fall into this class, as do a variety of wind controllers and guitar-like controllers such as the SynthAxe. It is intended only to drive other MIDI devices. Such a device provides a musical keyboard and perhaps other actuators (pitch bend and modulation wheels, for example) but produces no sound on its own. The most common type of device in this class is the keyboard controller. The human interface component of a traditional instrument redesigned as a MIDI control device.The following are classes of MIDI (Musical Instrument Digital Interface) controller: The Roland Octapad percussion/drum controller While the most common use of MIDI controllers is to trigger musical sounds and play musical instruments, MIDI controllers are also used to control other MIDI-compatible devices, such as stage lights, digital audio mixers and complex guitar effects units. Many audio control surfaces are MIDI-based and so are essentially MIDI controllers. The MIDI controller can be populated with any number of sliders, knobs, buttons, pedals and other sensors, and may or may not include a piano keyboard. Other common MIDI controllers are wind controllers, which a musician blows into and presses keys to transmit MIDI data, and electronic drums. When the keys are played, the MIDI controller sends MIDI data about the pitch of the note, how hard the note was played and its duration. The most commonly used MIDI controller is the electronic musical keyboard MIDI controller. The sound module or synthesizer in turn produces a sound that is amplified through a loudspeaker. notes played and their intensity), which can then be transmitted to a MIDI-compatible sound module or synthesizer using a MIDI cable. MIDI controllers typically have some type of interface that the performer presses, strikes, blows or touches. MIDI controllers usually do not create or produce musical sounds by themselves. The original MIDI specification has been extended to include a greater range of control features. Some MIDI controllers are used in association with specific digital audio workstation software. Controllers for percussion and stringed instruments exist, as well as specialized and experimental devices. A wind controller has a sensor that converts breath pressure to volume information and lip pressure to control pitch. 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. As a MIDI controller, it only sends data about which keys or buttons are pressed to a MIDI-compatible sound module or synthesizer, which then produces the sounds.Ī 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. The keytar does not produce any musical sounds by itself. A Roland keytar, keyboard MIDI controller designed to be worn with a shoulder strap during performance.
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