Design Guide - 15
User Interface for Beam Shaping
1-module array
Steer: ± 20°
Spread: Up to 30° (± 15°)
−20°
15°
15°
2- or 3-module array
Steer: ± 20°
Spread: Up to 40° (± 20°)
−20°
20°
20°
30°
40°
Ear
Height
0.3-0.8 m
(1’-2.5’)
Max Recommended
The beam shape can be adjusted with one of the following:
A:
Enter Steering angle value in the cell (Positive steering angle aims the beam upward).
B:
Select and move the edges of Top (Rear) throw line and Bottom (Front) throw line on the Vertical
Coverage Map.
C:
Enter the distance and angle values of the above throw lines in the cell.
A, B and C are linked and are automatically updated when the beam shape is changed.
When you move the edges on the Vertical map, select the Top (Rear) throw line edge and move to the target
point of far throw. Remember to take the ear height of the far-end listener into account. You can move the
Bottom (Front) throw line edge but it does not affect the beam shape.
Note:
The Top/Rear Angle and Steering Angle may not necessarily be the same. This is because Modeler is
adjusting the Steer angle to effectively cover the far throw target point.
Each Beam type has its own limitation for the Beam Parameters. When you drag the edge, observe the color
of the circle of the line edge; if it is green, the edge is within the limitation. When it turns red, it is outside the
limitation and the edge snaps back to the original position.
Vocal Range Smoothing Option:
Select either ON or OFF. With this option ON, the tonal balance inside the
coverage becomes more consistent, and the sidelobes from the beam are suppressed and the beam shape
becomes smoother, specifically around voice range. The trade-off of this option is that you lose a few dB of
headroom. By default, Vocal Range Smoothing is ON with Flat-Floor Optimized.
