Yamaha QY-300 Owner's Manual page 55

12: Thin Out
After setting the parameters as required press [ENTER] to execute the Extract
Event job. The metronome icon will appear on the display while the data is
being processed, then "Completed" will appear briefly when the job is done.
Press the [F6] key ("Exit") to return to the job list, or a mode key to go directly
to the selected mode.
"Thins out" specified types of data by removing every other event of the
specified type. This is particularly useful for reducing the volume of data
required for pitch bends, aftertouch and other control change operations, thus
making more efficient use of the available memory.
The "TR" parameter selects the track to be affected by the Thin Out job: "01"
... "16" for the sequencer tracks, or "Tmp" for the tempo track.
The "M" parameters above the graphic bar are used to specify the first
measure:beat and last measure:beat of the range to be modified.
First measure
The data type parameter determines the type of data to be thinned.
P.BEND Pitch bend events.
CTRL Control change events. When this event type is selected a control
change number parameter appears to the right of the type param-
eter. The control change parameter determines the MIDI control
change number(s) to be thinned: "000" ... "127".
CH A.T Channel aftertouch events.
POLY A.T Polyphonic aftertouch events.
After setting the parameters as required press [ENTER] to execute the Thin
Out job. The metronome icon will appear on the display while the data is being
processed, then "Completed" will appear briefly when the job is done. Press
the [F6] key ("Exit") to return to the job list, or a mode key to go directly to
the selected mode.
Last measure
M001:1~999:4
First beat
The Song Jobs
Last beat
4 7