Design Guide - 13
User Interface for Beam Shaping
User Interface for Beam Shaping
Basic Steer/Spread
Select Steer/Spread from the beam type drop-down selector. With this beam type, the beam axis can be
steered vertically, and the beam can be spread symmetrically from that axis. You can adjust the beam shape
with one of the following:
A: Enter Steering/Spreading angle values 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. Repeat the same for
the Bottom (Front) throw.
Note: A sum of Top/Rear Angle and Bottom/Front Angle may not necessarily be the same as the Spreading
angle. This is because Modeler is adjusting the Steer/Spread angle to eectively cover the far throw target
point.
Each Beam type has its own limitation for the Beam Parameters. For example, you cannot spread the beam
too wide with Basic Steer/Spread. 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.
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