Yamaha QY-300 Owner's Manual page 118

Editing Songs & Phrases
110
"CC": Control Change
Control change events can be used to apply modulation, sustain, volume, and
other types of control according to the standard MIDI control change control-
ler assignments (see list on page 6 of the separate "VOICE LISTS AND MIDI
DATA" booklet). The left parameter is the control change number (the type of
control), and the right parameter is the control change value (the amount of
control). Both parameters can be set from "000" to "128".
Control change number
"ChAT": Channel Aftertouch
This event can be used to apply channel (monophonic) aftertouch, in which
pressure on any key controls all notes being played by the same amount. The
channel aftertouch value can be set from "000" to "127".
"PAT": Polyphonic Aftertouch
Polyphonic aftertouch allows independent aftertouch values to be applied to
each note played. This event has two parameters: a note number and a value.
The note number corresponds to standard MIDI note number assignments.
Both parameters can be set from "000" to "127". The bar graph to the right of
the value parameter provides a visual indication of the amount of aftertouch
"pressure" applied by the specified value.
Note number
Control change value
Channel aftertouch value
Aftertouch value
Bar graph
Bar graph