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MIDIbox SEQ V4 Beginner's Guide
MIDIbox - http://wiki.midibox.org/
Two cases where changing the divider/timebase value is useful are 1) fast melody tracks and
2) slow chord tracks.
You might have a lead track where the default 16th notes are not enough for the melodies
you want. If the other tracks are 64 steps long and their timebase is the default 16 (divider
value 16), you could set the lead track to 128 steps, running at timebase 32 (divider value 8).
Each step on the displays now represents a 32th note. This way the longer track would reach
its end at the same time as the other tracks, but you could effectively write your melody with
32th notes.
If you need 64th notes, quick select options have run out and you have to use GPK2 to
change the divider value to 4.
Slow divider settings, on the other hand, are useful e.g. for tracks which play chords that
don't change very often. For example, if your “chord track” is 64 steps long, you could set its
timebase to 4, i.e. four times as slow, and fit all your chord changes in the two displays on the
EDIT page. This way you can see the relevant note information easily, without the need to
scroll back and forth around the track.
Set G1T1 LENGTH to 16/xx, G1T2 LENGTH to 8/xx, and G1T1 and G1T2 dividers to timebase
16. Then press PLAY. If you switch between G1T1 and G1T2 with the track selection buttons,
you will see they are running at equal speed. (It's good to be on the EDIT page for the best
demonstration of this.) STOP the sequencer and select G1T1, then go to the DIVIDER page
and quick-select timebase 32 (divider value 8) by pressing GPB16. Press PLAY. You can see
the red cursor running twice as fast as before for G1T1, and playing the notes twice as fast.
Each step on the EDIT page for G1T1 now represents a 32th note, and G1T1, which has 16
steps, will now run from start to end as quickly as G1T2, which is only 8 steps that represent
16th notes.
Now let's make G1T2 run twice as slow compared to the original speed. You can change the
timebase when the sequencer is playing, but unless you're right on the beat, the tracks will
go off beat (and even more certainly with changing the divider value live with a knob). So,
press STOP, change G1T1's timebase back to 16, and then change G1T2's timebase to 8
(divider value 32). Press EDIT and PLAY again, and you can see how the cursor is running
slower, and the notes are playing slower. Also, the tracks are ending at the same time,
because even though G1T2 is twice as short as G1T1, it's also twice as slow.
—–
3. Trigger layers and parameter layers
On the lower left corner of the front panel there are three trigger layer selection buttons (A, B, C) and
three parameter layer selection buttons (A, B, C). These allow you to select different layers for editing.
Editing is done either with the GP button under each step (for the active trigger layer) or with the GP
knobs under each step (for the active parameter layer).
