Because of the 31.25 Kbaud transmission speed, this is normally perceived as a simultaneity. A 3-note chord, for example, will be transmitted as three separate note #-velocity pairs. Simultaneous events in MIDI must be sent as a string of serial commands. The note will sound until a message to turn off the same note number is received, since MIDI note messages do not include rhythmic durations. In this case the maximum velocity of 127 (binary 01111111) is sent. The first data byte indicates what note to play (decimal 60 = binary 00111100 = middle C), while the second data byte indicates how loud to play the note (via key velocity). The channel numbers of the status byte (its last 4 bits) are offset one value higher, since Channel 1 is set by decimal 0 and Channel 16 is set by decimal 15. N=channel c=coarse f=fine (c+f = 14-bit resolution) N=channel c= controller v=controller value(0-127) To read the chart, note that each letter (n,k,v,p,c,f) holds the place of a bit whose purpose is described in the Legend column.Ĭlick here for a chart of pitch-to-MIDI note #'s.Ĭlick here for a list of currently assigned MIDI controller numbers. The table below presents a summary of the MIDI Channel Voice Message codes in binary form.Ī MIDI channel voice message consists of a status byte followed by one or two data bytes.

Midi note number above middle c