467 MIDI Information

--Play a MIDI file

  1. MIDI files for listening are in MIDIfiles.zip; the text versions are in miditxt.zip for adapting to your program.
    There are five tunes; you should select the one you wish to play. The files called "bandstand_****" go together, and are the separate voices. Audition  guitar 1 to hear the tune. You can play the MIDI files (*.mid) on your PC-- if you reconnect the speakers...


Here is a sample song in text format:

// z:\CSE467\midi0\aria.mid
mthd
  version 0 // single multichanneltrack
  // 1 track
  unit 192 // is 1/4
end mthd

mtrk // multichannel track  // track 1
 /* U0 */  /* 0ms */   tact 4 / 4 24 8
 /* U0 */  /* 0ms */   beats 35.00001 /* 1714285 microsec/beat */
 /* U0 */  /* 0ms */   key "Cmaj"
 /* U0 */  /* 0ms */   [1]+d3 $5A;
 /* U0 */  /* 0ms */   [2]+a4 $5A;
 /* U0 */  /* 0ms */   [3]+d5 $5A;
 /* U0 */  /* 0ms */   [4]+f#5 $5A;
  1/8; /* U96 */  /* 857ms */ [1]-d3 $40;
 /* U96 */  /* 857ms */   +d4 $5A;
  1/8; /* U192 */  /* 1714ms */ -d4 $40;
 /* U192 */  /* 1714ms */   +c#4 $5A;
  1/8; /* U288 */  /* 2571ms */ -c#4 $40;
 /* U288 */  /* 2571ms */   +c#3 $5A;
  1/8; /* U384 */  /* 3428ms */ -c#3 $40;
 /* U384 */  /* 3428ms */   +b2 $5A;
 /* U384 */  /* 3428ms */   [2]-a4 $40;
 /* U384 */  /* 3428ms */   +b4 $5A;
  1/8; /* U480 */  /* 4285ms */ [1]-b2 $40;
 /* U480 */  /* 4285ms */   +b3 $5A;
  1/8; /* U576 */  /* 5142ms */ -b3 $40;
 /* U576 */  /* 5142ms */   +a3 $5A;
  1/8; /* U672 */  /* 5999ms */ -a3 $40;

Comments are inside /* ... */ or start with // till end of line. 

Pauses are shown before commands either in MIDI units ( 47; )or musical notation ( 536/4; ).

MIDI notes consists of pairs of commands: Note on is displayed as + and Note off is displayed as -

MIDI channel are displayed in mtrk(channel number) or as [channel number] inside a track before a command.

Values are shown decimal (0-127) or hexadecimal ($00 - $7F).

Standard MIDI file format is here.

Construct a new program for the Microblaze that plays the song of your choice triggered by a keypress.