-<dl>
- <dt>Audio System</dt>
- <dd>Currently, the only option here is <kbd class="menu">JACK</kbd>. In the future, native
- hardware access may be supported.</dd>
- <dt>Driver</dt>
- <dd>
- On Mac OS X this will typically be <kbd class="menu">CoreAudio</kbd>. On Linux usually
- this will be either <kbd class="menu"><abbr title="Free Firewire Audio Driver fOr
- linux">FFADO</abbr></kbd>
- or <kbd class="menu"><abbr title="Advanced Linux Sound
- Architecture">ALSA</abbr></kbd>, depending on whether or not you are
- utilizing a firewire device. Advanced users on all platforms may also
- use <kbd class="menu">NetJack</kbd> which provides network audio I/O.
- </dd>
- <dt>Device</dt>
- <dd>The selector should show all availiable interfaces provided by the
- driver above and which are capable of duplex operation.
- <p class="warning">
- If you are using an Intel Mac running OS X and the builtin audio
- interface, you must
- first <a href="@@using-more-than-one-audio-device">merge
- its separate input and output devices into a single "aggregate
- device"</a> before Ardour will be able to use it.
- </p>
- </dd>
- <dt>Sample Rate</dt>
- <dd>
- The selector will allow you to select from any sample rate
- supported by the device selected above it.
- </dd>
- <dt>Buffer Size</dt>
- <dd>
- You can adjust the size of the buffer used by your audio interface
- to allow for either lower latency, or lower CPU usage and higher
- latency.
- </dd>
- <dt>Input/Output Channels</dt>
- <dd>
- Here you can specify the number of hardware channels to use. The
- default is <kbd class="menu">all available channels</kbd>.</dd>
- <dt>Hardware Input/Output Latency</dt>
- <dd>Specify the hardware delay in samples for precise latency compensation.</dd>
- <dt>Calibrate</dt>
- <dd>
- This button guides you through a semi-automated process to obtain
- precise hardware latency measurements for the above option.</dd>
- <dt>MIDI System</dt>
- <dd>
- Select the MIDI driver to use. On Mac OS X, this will be <kbd
- class="menu">CoreMIDI</kbd>. On Linux, you can change between two legacy
- ALSA drivers or the (preferred) new JACK+ALSA implementation.</dd>
-</dl>