manual/include/midi-track-controls.html

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<p>A typical <dfn>MIDI track header</dfn> looks like this:</p>
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<img src="/images/typical-midi-track-controls.png" alt="midi track controls"
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/>
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<p>
To see the full set of MIDI track controls, you need to increase the
<a href="@@track-height">track height</a>
beyond the default. MIDI tracks show only a few of the control elements
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when there is insufficient vertical space.
</p>
<p>
A MIDI track has the same basic
<a href="@@audio-track-controls">controls as an audio track</a>,
with the addition of two extra elements. The set of buttons below the main track
controls the <dfn>MIDI channel</dfn>(s) that will be visible in the editor. A MIDI track's
data may span any number of the 16 available MIDI channels, and sometimes it is
useful to view only a subset of those channels; different instruments may,
for example, be put on different channels. Clicking on a channel number toggles
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its visibility.
</p>
<p>
To the right of the MIDI track controls is a representation of a piano keyboard
called the <dfn>scroomer</dfn>. This performs a couple of functions.
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The scrollbar controls the range of pitches that are visible on the
track, as visualized by the piano keyboard.<br>
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Drag the body of the scrollbar up and down to display higher or lower
pitches.<br>
Drag the scrollbar handles to zooms in and out and increase and decrease the
range of visible pitches.<br>
clicking on the piano plays the corresponding MIDI note for reference.
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</p>
<p>
To edit the contents of a MIDI track see <a href="@@edit-midi">Edit
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MIDI</a>.
</p>