Two LEDs display activity on the MIDI IN and OUT channels. The package also includes two 5-foot 2.5mm to 5-pin DIN MIDI cables, as well as a micro-USB charging port and cable to provide power to the iOS device for longer sessions. Three MIDI ports are included: in addition to the standard MIDI IN and MIDI OUT connections, iRig MIDI also includes a MIDI THRU port for use with more sophisticated MIDI system configurations such as external sound modules and sequencers-a useful addition for professional musicians that isn’t commonly found on other similar accessories. IRig MIDI ($70) is IK Multimedia’s pocket-sized Core MIDI interface for connecting MIDI devices to an iPhone, iPod touch or iPad. Apple recognized the need for a standard method to address this increasingly common requirement, debuting Core MIDI in iOS 4.2 so MIDI hardware and iOS apps could easily communicate with each other. Prior to the introduction of Core MIDI in November 2010, accessory manufacturers-and software developers-had to build proprietary MIDI solutions for iOS devices. MIDI has also been expanded beyond traditional music and audio to include a wide array of other studio and performance equipment, such as stage lighting systems. This information can be recorded and played back on MIDI hardware, or edited using a number of desktop computer applications.
Rather than sending out actual audio streams, MIDI devices operate by sharing digital information-notes, tempos, sound references, and volume levels-with one another. The Musical Instrument Digital Interface standard, more commonly known as MIDI, enables accessories such as electronic piano keyboards, synthesizers, and drum machines to interface with each other and computer software for recording and editing of compositions. For those who might not know the background details, here’s a brief primer.
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