User's Manual

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Chapter 15: Adding Sounds To Virtual Worlds
Outside of the maximum intensity perimeter, the intensity of the sound attenuates over
distance until it reaches the minimum intensity perimeter. Beyond the minimum
intensity perimeter, the volume of the sound source is constant, defined by the
setCullIntensity() field.
Reverse Direction Sound
Cosmo 3D also provides a complimentary set of fields that allow you to define the
propagation and attenuation of the same sound in the opposite direction, as shown in
Figure 15-3.
Figure 15-3 Forward and Reverse Sound Propagation
The minimum and maximum intensities in the reverse direction are the same as those in
the forward direction. The minimum and maximum intensity perimeters, however, are
specified separately with the minBack(), and maxBack() fields.