3 <dfn><abbr title="Musical Instrument Digital Interface">MIDI</abbr></dfn> is
4 a way to describe musical performances and to control music hardware and
9 Ardour can import and record MIDI data, and perform a variety of editing
10 operations on it. Furthermore, MIDI can be used to control various functions
14 <h2>MIDI Handling Frameworks</h2>
17 MIDI input and output for Ardour are handled internally by the same "engine" that
18 handles audio input and output. However, Ardour can use as many MIDI devices
19 as the system can see as there are no syncing difficulties as there would be with audio.
24 <td><dfn>CoreMIDI</dfn> is the standard MIDI framework on OSX systems.</td></tr>
26 <td><dfn><abbr title="Advanced Linux Sound API">ALSA</abbr> MIDI</dfn> is the
27 standard MIDI framework on Linux systems.</td></tr>
29 <td>There is no single standard MIDI framework on Windows, but Ardour
30 can work with ASIO and others.</td></tr>
34 On Linux systems, <dfn>QJackCtl</dfn> control software displays ALSA MIDI
35 ports under its "ALSA" tab (it does not currently display CoreMIDI ports).
36 By contrast, JACK MIDI ports show up under the <kbd class="menu">MIDI</kbd>
37 tab in QJackCtl. However, when Ardour is using jackd for audio in and out
38 the alsa MIDI ports are not accessable. When Ardour is using ALSA for audio
39 in and out then only alsa MIDI ports are accessable.
42 <h2>JACK MIDI Configuration</h2>
45 By default, JACK will <strong>not</strong> automatically detect and use
46 existing MIDI ports. One of several ways of <dfn>bridging</dfn> between
47 the native MIDI frameworks (e.g. CoreMIDI or ALSA) and JACK MIDI must be
48 chosen, as described in the following sections.