Quick-Start Guide
7
toggled on or off by clicking the enabled /
disabled column to their left.
Now you must select a sample rate
and latency. The sample rate defaults to
44100 Hz,
which is CD quality, and a safe
choice for most purposes. If you wish to
choose another rate, simply select your
preference from the drop down list.
The final option is latency, and this
defines how much of a buffer will be used
by Tracktion when transferring audio to
or from your audio device. A buffer is nec-
essary to achieve reliable recording and
playback performance. If your computer
is temporarily unable to keep up with the
demands of real-time audio, and the buffer
size is too small, data loss is likely to oc-
cur. This data loss will be audible to you as pops and clicks. For more information on pops
and clicks not related to latency, see the “Troubleshooting USB and FireWire” PDF on the
Tracktion 3 Installation disc.
Setting the ideal buffer size unfortunately requires a trade-off; on the one hand you need
a buffer large enough to provide error free performance, but on the other hand, if the buffer
size is too large, you may begin to notice a delay between Tracktion processing a sound,
and the sound being audible through your monitors. This delay is called “latency,” and it
is this latency that is being referred to above. Too much latency may be noticeable to you
when playing live, so ideally latency should be set as low as your computer can handle
without introducing errors into your recordings.
Perhaps the best strategy for determining the ideal latency setting is to start high, say
11 ms or so and, over time, adjust the value downwards until you reach a level that is com-
fortable when playing live, and yet yields reliable, error-free playback and recording.
Note: All of these settings can easily be
changed at a later stage from the Set-
tings tab, so don’t worry if you are unsure
what to do. The default settings are
normally good enough to get you started,
and you can re-run the wizard at any time
from an option in the help menu.
When you have finished with this page,
click the next button to begin setting up
your MIDI devices (Fig. 1-4).
On this page you can select which MIDI
inputs you wish to use with Tracktion.
Simply click the enabled / disabled column
on the left to toggle an input on or off.
Figure 1-3
Figure 1-4
(28 paginas)
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