6
Tempus-3D
• Page Up—Rotates on the z-axis ten de-
grees in the clockwise (negative) direction
• Page Down—Rotates on the z-axis ten
degrees in the counter clockwise (positive)
direction
• Plus (+) key on the number pad—En-
larges the object
• Minus (–) key on the number pad—
Reduces the object
• “L” key—Moves the light source to the left
• “R” key—Moves the light source to the
right
• “U” key—Moves the light source up,
toward the top of the screen
• “D” key—Moves the light source down,
toward the bottom of the screen
• “F” key—Moves the light source farther
away from the object
• “N” key—Moves the light source nearer to
the object
• “S” key—Create a new window with a 2D
graph slice of the 3D object. A new window
appears with the object sliced along the line
of the slice line. The time position of the
slice is also marked on the graph. The color
used in the 2D graph will correspond to the
object’s color bar.
A Step-by-step Guide to Using
TEMPUS-3D
Once TEMPUS has analyzed the data, and
you have clicked on one of the Display
Channel icons, Tempus will automatically
take you into TEMPUS-3D. In TEMPUS-3D,
you can view a three-dimensional picture of
sound from any angle. The following steps
will give you an idea of how to manipulate
the graphical display.
1. Once TEMPUS-3D has displayed the
analysis in the form of a spectrogram, look
for the axes. The frequency axis (z-axis)
runs vertical along the screen, the time axis
(x-axis) runs horizontal, and the amplitude
axis (y-axis) runs perpendicular to the
screen (this is sometimes described as
coming out of the screen).
2. Once you’ve oriented yourself to the
axes, play with the rotation using the
keyboard commands.
3. Click on the surface/wireframe button to
switch the appearance of the display be-
tween a wireframe and a complex surface.
4. Then use the axis rotation command
windows to refine the position.
5. Use the plus and minus keys on the
keyboard number pad or the buttons on the
dialogue bar to make the object the desired
size.
6. To reposition the object on the screen,
press the Shift key and hold it down while
you click the left mouse button where you
would like the object to be located on the
screen.
7. If you want to limit the range of the
amplitudes, you can do so with the top and
bottom clipping command windows.
8. You can adjust the “light source” to
accent the contours of the object in a differ-
ent way by using the L, R, U, D, N, and F
keys
Storage of Analysis Files
If an analysis yields a result that the opera-
tor wishes to save, then use the Windows
Explorer to locate the .T3D file
(Output1.t3d for channel 1) and rename it
as another file. This file will reside in the
directory of the .WAV file that was used in
