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MIDI

MIDI is an acronym that stands for 'Musical Instrument Digital Interface'. It is a protocol that allows electronic music instruments, computers, and other devices to communicate with each other and share information. MIDI messages are sent between devices using a series of "packets" that contain specific instructions or data.

One type of MIDI message is the "Control Change" (CC) message, which is used to control various parameters of a MIDI device, such as the volume or the pitch of a synthesizer. For example, a CC message with a value of 127 for the "Volume" parameter would tell a synthesizer to set its volume to the maximum level. Similarly, a CC message with a value of 64 for the "Pitch Bend" parameter would tell a synthesizer to bend the pitch of a note to the middle value.

Here are a few more examples of CC messages and their corresponding parameters:

  • CC#1 (Modulation): Controls the amount of modulation applied to a sound. A value of 0 means no modulation, while a value of 127 means the maximum amount of modulation.

  • CC#7 (Volume): This message is used to control the overall volume of a MIDI device. The value of the message ranges from 0 (minimum volume) to 127 (maximum volume). For example, a CC#7 message with a value of 64 would set the volume to halfway between the minimum and maximum.

  • CC#10 (Pan): This message is used to control the stereo panning of a MIDI device. The value of the message ranges from 0 (fully left) to 127 (fully right). For example, a CC#10 message with a value of 64 would set the panning to the centre.

  • CC#11 (Expression): Controls the overall volume of a sound. A value of 0 means the sound is at its minimum volume, while a value of 127 means the sound is at its maximum volume.

  • CC#91 (Reverb send level): This message is used to control the amount of reverb applied to a MIDI device. The value of the message ranges from 0 (no reverb) to 127 (maximum reverb). For example, a CC#91 message with a value of 64 would set the reverb to halfway between the minimum and maximum.

These are just a few examples of the many different CC messages that can be sent over MIDI. MIDI is a powerful and flexible protocol that is used in a wide range of electronic musical instruments and other devices.

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