
CLA Nx / User Guide
9
T
RACKING
D
EVICE
M
ENU
Use this drop-down menu to select the device used for head tracking. CLA Nx can track head movement from two
sources:
Camera
and
Nx Head Tracker
.
C
AMERA
activates the computer’s camera for head tracking. If more
than one camera is available, choose from the list.
N
X
H
EAD
T
RACKER
selects the Nx Head Tracker that will be used
by CLA Nx. Choose one Head Tracker from the list.
The
S
ENSOR
F
USION
mode uses the selected camera and one of
the available Nx Head Trackers together. Using these two kinds of
sensors simultaneously yields a tracking rate of up to 80 fps.
The
S
ETTINGS
button takes you to the HeadTracker application’s control
panel. Use it to reopen the application if it has been closed or if you want
to tweak certain Head Tracker controls.
C
ALIBRATE
defines your head position as the center position. Hold your head centered, look straight forward, and
click the button to let the system know where your center listening position is. Each time you start the system or
change either your position or the camera’s placement, you can recalibrate.
R
ATE
indicates the rate of head tracking in frames per second (fps). The optimal rates are:
Camera: 25 fps to 30 fps
Nx Head Tracker: 35 fps to 50 fps
Sensor Fusion: 45 fps to 80 fps
Please note
: The Sensor Fusion mode can be used by only one person at a time. That is, the camera must be
aimed at the person who is wearing the Nx Head Tracker.
Summary of Contents for CLA Nx
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