Musical Instrument Digital Interface


MIDI stands for Musical Instrument Digital Interface. It is the standard electronic language 'spoken' between electronic instruments and the computerized devices which control them during performances. MIDI (Musical Instrument Digital Interface) enables electronic musical instruments such as keyboard controllers, computers, and other electronic equipment to communicate, control, and synchronize with each other. MIDI devices communicate with each other by transmitting "event messages" such as the pitch and intensity of musical notes to play, control signals for parameters such as volume, vibrato and panning, cues, and clock signals to set the tempo. As an electronic protocol, it is notable for its widespread adoption throughout the music industry.
The Atmel ATMega8 is the most efficient high performance, low power 8-bit RISC microcontroller, that offers the following main features used in this project :
  • MIDI Keyboard player.
  • Four Channel. MIDI Musical Instrument Digital Interface.
  • Volume UP/Down
  • Sound output through PC Sound Card.
  • Input / output Ports.
  • PC Interface using RS-232.
  • Supply voltage : +12V, 600mA` from battery emulator.
  • Power ON Reset.
  • Alarm LED.
  • 4x4 Keypad selection.
  • Expansion Connector for external MIDI IN / MIDI OUT.
This technique can be used in applications such as :
  • MIDI Guitar
  • MIDI Drums
  • MIDI Sequencer



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