Note on/off

Definition

In MIDI (Musical Instrument Digital Interface), 'note on' and 'note off' are messages that indicate when a musical note is played and when it is released, respectively. These messages are crucial for controlling virtual instruments and MIDI controllers, enabling precise timing and expression in music production. The 'note on' message triggers the sound to begin, while the 'note off' message stops the sound, allowing musicians to create dynamic performances through their MIDI devices.

5 Must Know Facts For Your Next Test

1. 'Note on' messages contain information about the note being played, including the pitch (note number) and velocity (how hard the note is struck).
2. 'Note off' messages can also include velocity information, which some virtual instruments use to influence the release of the sound.
3. When using MIDI, multiple 'note on' messages can be sent simultaneously for polyphonic playing, allowing for chords and complex harmonies.
4. The timing of 'note on' and 'note off' messages is essential for achieving rhythmic precision in music production.
5. Many DAWs (Digital Audio Workstations) allow users to edit MIDI notes visually in a piano roll or similar interface, where 'note on' and 'note off' events can be manipulated easily.

Review Questions

• How do 'note on' and 'note off' messages work together to create a musical performance?
  • 'Note on' messages trigger a sound when a note is played, while 'note off' messages stop that sound when the note is released. Together, these two messages form the basic building blocks of MIDI performance. By controlling when notes start and stop, musicians can create expressive melodies and rhythms that capture the nuances of their playing.
• Discuss the significance of velocity in relation to 'note on' messages and how it affects the output of virtual instruments.
  • Velocity is a critical component of 'note on' messages because it determines how loudly or softly a note is played. This impacts not just the volume but also the timbre of the sound produced by virtual instruments. Instruments can interpret varying velocities to produce different sounds or articulations, making performances feel more lifelike and expressive.
• Evaluate how the manipulation of 'note on' and 'note off' messages within a DAW can enhance a music production project.
  • Manipulating 'note on' and 'note off' messages within a DAW allows producers to fine-tune musical performances for greater precision and creativity. For instance, adjusting note lengths can change the rhythm and phrasing, while editing velocities can enhance dynamics. This level of control enables producers to craft intricate compositions that reflect their artistic vision, making it easier to achieve professional-sounding results.

Related terms

MIDI Message: A digital signal sent between MIDI devices to convey performance information, such as note on/off events, pitch bend, and control changes.

Velocity: A measure of how hard a note is played in MIDI, affecting the loudness and timbre of the sound produced by virtual instruments.

MIDI Controller: A device used to send MIDI messages, allowing musicians to interact with software and hardware instruments, often featuring keys, knobs, and sliders.