Abstract: This metric is the ratio of the maintenance personnel who are actively doing the maintenance work (direct) to the maintenance personnel supporting the maintenance work (indirect). Direct personnel include those workers in the maintenance department that repair, maintain, modify or calibrate equipment.
MIDI (Musical Instrument Digital Interface) is a protocol designed for recording and playing back music on digital synthesizers that is supported by many makes of personal computer sound cards. Originally intended to control one keyboard from another, it was quickly adopted for the personal computer.
What is a MIDI-interface, will I need one? MIDI interfaces are used to connect older and retro-styled equipment (outboard equipment such synthesizers, effects units, sequencers) to your computer. With most DJ Gear / Music Production Gear, you will not need a separate MIDI-interface.