1 <h2 class="clear">Audio/MIDI Setup</h2>
3 <figure class="center">
4 <img src="/images/Audio-MIDI_Setup.png" alt="The Audio/MIDI Setup Dialog"/>
6 The Audio/MIDI Setup Dialog
11 This window exposes the different audio options to be used by Ardour for the
12 current work session, for hardware and software and is made of:
16 <tr><th>Audio System</th>
17 <td>Depending on the operating system, Ardour can possibly use different audio
18 systems, e.g. on Linux, both <abbr title="Advanced Linux Sound Architecture">
19 ALSA</abbr> and <abbr title="JACK Audio Connection Kit">JACK</abbr> are
24 On Mac OS X this will typically be <kbd class="menu">CoreAudio</kbd>. On Linux usually
25 this will be either <kbd class="menu"><abbr title="Free Firewire Audio Driver fOr
26 linux">FFADO</abbr></kbd>
27 or <kbd class="menu"><abbr title="Advanced Linux Sound
28 Architecture">ALSA</abbr></kbd>, depending on whether or not a firewire device
29 is used. Advanced users on all platforms may also
30 use <kbd class="menu">NetJack</kbd> which provides network audio I/O.
33 <td>The selector should show all available interfaces provided by the
34 driver above and which are capable of duplex operation.
36 When using an Intel Mac running OS X and the builtin audio
37 interface, its separate input and output devices must be <a href="@@using-more-than-one-audio-device">
38 merged</a> first into a single "aggregate device" before Ardour will be able
42 <tr><th>Sample Rate</th>
44 The selector will allow to select from any sample rate supported by the device
47 <tr><th>Buffer Size</th>
49 The size of the buffer used by the audio interface can be adjusted
50 to allow for either lower latency, or lower CPU usage and higher
53 <tr><th>Input/Output Channels</th>
55 Specifies the number of hardware channels to use. The
56 default is <kbd class="menu">all available channels</kbd>.</td></tr>
57 <tr><th>Hardware Input/Output Latency</th>
58 <td>Specify the hardware delay in samples for precise latency compensation.</td></tr>
59 <tr><th>Calibrate</th>
61 This button runs a semi-automated guided process to obtain
62 precise hardware latency measurements for the above option.</td></tr>
63 <tr><th>MIDI System</th>
65 Selects the MIDI driver to use. On Mac OS X, this will be <kbd
66 class="menu">CoreMIDI</kbd>. On Linux, this will follow the audio backend.
67 If the Audio backend is ALSA, midi will be alsa also. If the backend is
68 JACK, it can be changed between two legacy
69 ALSA drivers or the (preferred) new JACK+ALSA implementation.</td></tr>