Specifications

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There are two options to choose from to determine what your surface is representing:
 The actual structure of the building (concrete or wood surfacing)
 The heads of the people in the audience (listening area). This option is much more
advisable because the structure is not what we are concerned about when
focusing loudspeakers. Our concerns lie with the impact to the listeners in the
audience.
For quick reference, a seated audience is roughly 3.5’ (1.1m) above the surface while a
standing audience is typically 5.5’ (1.7m) above the surface. For our simple model, we
will say that the audience is seated and will therefore enter 3.5’ (1.1m) into the Z value
for surface origin.
2. Enter the Length and Width values of the surface. Measure the length (distance
along x-axis) and width (distance along y-axis) of just this surface, and enter the
values into the Properties pane while making sure the surface is still selected.
Let’s enter 200’ as the Length of the surface and 100’ as the Width of the surface. You
will notice that all the changes are reflected in your model in the Venue View.
Remember: the Width measurement expands equally in both directions from the
starting point of the surface, so your surface is still centered along the x-axis.
3. The next cell down is the Inclination Angle. This is to set a rake of the surface. The
surface will begin an inclination beginning at the origin, and will incline on an angle
that you determine. Inclination angles can be determined from room drawings but
may also be determined on-site using an inclinometer tool.
For our simple example, we have chosen 2 degrees as the Inclination Angle.