MIDI - Revision history

Phi2x: /* Weblinks */

2025-04-13T17:39:22Z

‎Weblinks

Phi2x: /* Weblinks */

2025-04-13T17:28:45Z

‎Weblinks

Phi2x: /* Weblinks */

2025-04-10T01:38:34Z

‎Weblinks

Phi2x: /* Software Protocol */

2025-04-09T01:14:32Z

‎Software Protocol

Phi2x: /* Software Protocol */

2025-04-09T00:56:55Z

‎Software Protocol

Phi2x at 00:33, 9 April 2025

2025-04-09T00:33:52Z

Phi2x: /* Software Protocol */

2025-04-09T00:23:51Z

‎Software Protocol

Phi2x: /* Software Protocol */

2025-04-09T00:19:12Z

‎Software Protocol

Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /mnt/cpcwiki-httpdocs/includes/diff/DairikiDiff.php on line 434

Phi2x: /* Software Protocol */

2025-04-09T00:02:28Z

‎Software Protocol

Phi2x: /* Software Protocol */

2025-04-08T23:59:56Z

‎Software Protocol

@@ Line 140: / Line 140: @@
 * http://en.wikipedia.org/wiki/Musical_Instrument_Digital_Interface - wikipedia on MIDI in general
 * [http://tgv777.free.fr/index.php/fichiers-midi/ MIDI Files] [https://musical-artifacts.com/artifacts?order=most_downloaded&q=midi+soundfont MIDI SoundFonts]
-* [https://youtu.be/LFWBqUK4G_Q E1M1 Using 40 Different Soundfonts! Comparison w/ Doom MIDI]
+* [https://youtu.be/LFWBqUK4G_Q E1M1 Using 40 Different Soundfonts! Comparison w/ Doom MIDI] by [[Doomkid]]
 [[Category:Peripherals]]
 [[Category:Music and sound]]
 [[Category:DIY]] [[Category:Hardware]]

@@ Line 140: / Line 140: @@
 * http://en.wikipedia.org/wiki/Musical_Instrument_Digital_Interface - wikipedia on MIDI in general
 * [http://tgv777.free.fr/index.php/fichiers-midi/ MIDI Files] [https://musical-artifacts.com/artifacts?order=most_downloaded&q=midi+soundfont MIDI SoundFonts]
 [[Category:Peripherals]]
 [[Category:Music and sound]]
 [[Category:DIY]] [[Category:Hardware]]

@@ Line 139: / Line 139: @@
 * http://en.wikipedia.org/wiki/MIDI_1.0 - wikipedia on MIDI 1.0
 * http://en.wikipedia.org/wiki/Musical_Instrument_Digital_Interface - wikipedia on MIDI in general
 [[Category:Peripherals]]
 [[Category:Music and sound]]
 [[Category:DIY]] [[Category:Hardware]]

@@ Line 17: / Line 17: @@
 | 0xA || Polyphonic Key Pressure || 2 || Adjusts pressure on one note; data bytes are note number (0–127) and pressure value (0–127).
 |-
-| 0xB || Control Change || 2 || Changes a controller (e.g., volume); data bytes are controller number (0–127) and value (0–127).
+| 0xB || Control Change || 2 || Changes a controller (e.g., volume, pan, modulation); data bytes are controller number (0–127) and value (0–127).
 |-
 | 0xC || Program Change || 1 || Switches instrument; data byte is program number (0–127, e.g., piano, guitar).

@@ Line 5: / Line 5: @@
 == Software Protocol ==
-MIDI doesn’t contain audio data; it’s a set of commands that a synthesizer, sampler, or software interprets to generate sound.
+MIDI is a set of commands that a synthesizer, sampler, or software interprets to generate sound. The commands are:
-−
-This makes MIDI files tiny compared to audio files—think kilobytes versus megabytes. The commands are:
 {| class="wikitable"
@@ Line 36: / Line 34: @@
 The 16-channel system lets one controller  command multiple devices or voices independently. For example, Channel 1 could trigger a drum kit while Channel 2 plays a bassline.
 == Hardware Protocol ==

@@ Line 1: / Line 1: @@
 ''Musical Instrument Digital Interface (MIDI)''
-The original MIDI (Musical Instrument Digital Interface) protocol was developed in 1983 by Dave Smith and Ikutaro Kakehashi to enable communication between electronic instruments.
+The original MIDI protocol was developed in 1983 by Dave Smith and Ikutaro Kakehashi to enable communication between electronic instruments.
 == Software Protocol ==

@@ Line 13: / Line 13: @@
 ! Status Byte (Hex) !! Message Type !! Data Bytes !! Description
 |-
-| 0x8 || Note Off || 2 || Stops a note from playing
+| 0x8 || Note Off || 2 || Stops a note; data bytes set the note number (0–127) and release velocity (0–127, often unused).
 |-
-| 0x9 || Note On || 2 || Starts a note with velocity
+| 0x9 || Note On || 2 || Starts a note; data bytes are note number (0–127) and velocity (0–127, loudness; 0 acts as Note Off).
 |-
-| 0xA || Polyphonic Key Pressure || 2 || Adjusts pressure on a specific note
+| 0xA || Polyphonic Key Pressure || 2 || Adjusts pressure on one note; data bytes are note number (0–127) and pressure value (0–127).
 |-
-| 0xB || Control Change || 2 || Modifies a controller setting
+| 0xB || Control Change || 2 || Changes a controller (e.g., volume); data bytes are controller number (0–127) and value (0–127).
 |-
-| 0xC || Program Change || 1 || Changes the instrument patch
+| 0xC || Program Change || 1 || Switches instrument; data byte is program number (0–127, e.g., piano, guitar).
 |-
-| 0xD || Channel Pressure || 1 || Applies pressure to all notes on a channel
+| 0xD || Channel Pressure || 1 || Applies pressure to all notes on a channel; data byte is pressure value (0–127).
 |-
-| 0xE || Pitch Bend || 2 || Shifts pitch up or down
+| 0xE || Pitch Bend || 2 || Bends pitch; two data bytes form a 14-bit value (0–16383, 8192 = no bend).
 |-
-| 0xF || System Messages || Varies || System-wide commands
+| 0xF || System Messages || Varies || System-wide commands (e.g., sync, start/stop); data bytes vary by message type.
 |}

@@ Line 5: / Line 5: @@
 == Software Protocol ==
-Unlike audio protocols that transmit sound waves, MIDI carries event messages—instructions about what to play, how to play it, and when. These messages include:
+MIDI doesn’t contain audio data; it’s a set of commands that a synthesizer, sampler, or software interprets to generate sound.
-*Note On/Off: Triggers a note (e.g., "play middle C") and stops it.
+This makes MIDI files tiny compared to audio files—think kilobytes versus megabytes. The commands are:
-*Velocity: Indicates how hard a note is struck (volume or intensity, typically 0-127).
-*Pitch Bend: Adjusts a note’s pitch in real-time.
-*Control Change (CC): Modifies parameters like volume, pan, or modulation (e.g., CC#7 for volume).
-*Program Change: Switches instrument sounds (e.g., from piano to violin).
-MIDI doesn’t contain audio data; it’s a set of commands that a synthesizer, sampler, or software interprets to generate sound. This makes MIDI files tiny compared to audio files—think kilobytes versus megabytes.
+{| class="wikitable"
 A MIDI message is typically 1-3 bytes long:

@@ Line 17: / Line 17: @@
 A MIDI message is typically 1-3 bytes long:
-*Status Byte: Defines the message type (e.g., Note On) and channel (1-16). Each status byte has a '1' as its most significant bit.
+*Status Byte: Defines the message type (e.g., Note On) and channel (0-15, displayed as 1-16). Each status byte has a '1' as its most significant bit.
 *Data Bytes: Provide specifics (e.g., note number, velocity). Each data byte has a '0' as its most significant bit.