manual/include/midi-track-controls.html
2017-03-22 09:30:58 +01:00

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<p>A typical <dfn>MIDI track header</dfn> looks like this:</p>
<figure>
<img src="/images/typical-midi-track-controls.png" alt="A MIDI track header">
<figcaption>
A MIDI track header
</figcaption>
</figure>
<p>
To show the full set of MIDI track controls, the <a href="@@track-height">track height</a>
must be increased beyond the default. MIDI tracks show only a few of the control elements
when there is insufficient vertical space.
</p>
<p>
A MIDI track has the same basic controls as an <a href="@@audio-track-controls">audio track</a>,
with the addition of two extra elements:
</p>
<ol>
<li>Some meters for the track's outputs (MIDI in <span style="color:red;">red</span>,
Audio in <span style="color:green;">green</span>)</li>
<li>The <dfn>Scroomer</dfn>, a zoom and scroll controller for the midi notes range.</li>
</ol>
<p>
The Scroomer performs a couple of functions:
</p>
<ul>
<li>The scrollbar controls the range of pitches that are visible on the
track, as visualized by the piano keyboard. Drag the body of the scrollbar up
and down to display higher or lower pitches.</li>
<li>Drag the scrollbar handles to zooms in and out and increase and decrease the
range of visible pitches.</li>
<li>clicking on the piano plays the corresponding MIDI note for reference.</li>
</ul>
<p>
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. In the context menu (<kbd class="mouse">right</kbd> click),
the <kbd class="menu">Channel Selector</kbd> allows to control the <dfn>MIDI channel</dfn>(s)
that will be visible in the editor.
</p>
<p>
To edit the contents of a MIDI track see <a href="@@edit-midi">MIDI Editing</a>.
</p>