Specifications

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Display Mode - Select the range of frequencies that will be plotted within the SPL
map.
Frequency - If 1/3 octave, 1 octave, or 3 octave range is selected, the user must
select an appropriate frequency to be mapped.
3.5 Surfaces
Once surfaces have been added to the venue, the actual dimensions and conditions of
the surface will be adjusted in the properties pane. Clicking in the value column on the
right side of the window will allow editing of the surface parameters.
Name - Naming your surfaces is highly recommended as it is easy to lose track of the
running order of surfaces in complex designs. Click on the current name of the surface
to edit.
Start - Each surface must have an origin to determine where it will lay in the model.
The origin of the surface can be anywhere you like. The (X,Y,Z) coordinate for each
surface is defined as the front, center point. All movement and rotation is relative to
this point.
X - Where along the X-axis the surface is centered.
Y - Where along the Y-axis the surface is centered.
Z - Where along the Z-axis the surface is centered.
Length - The total length of the surface from the defined origin.
Width - The total width of the surface along the Y-axis (y-axis measurements will
expand equally in both directions from the origin).
Inclination Angle - If the surface has a rake such as can be found in a theatre or
balcony, enter the inclination here.
Rotation Angle - If there is a rotation required for the surface (such as in large arena
designs), enter the rotation angle here.
Ear Height - The vertical offset from the defined surface to the audience ear height.
This surface is used for acoustic model calculation (i.e. as the target coverage area for
the Array Wizard), the insertion height for virtual microphones, and the mapping
surface for SPL. This can be defined for each surface independently, and chosen from
four possible options:
Floor - The audience ear height is on the floor surface.