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"Spacial Acoustics for mobile Mixed Reality-Applications"
In the context of this thesis, the
MORGAN Framework developed at Fraunhofer FIT was extended
by the possibility to render three-dimensional sound through using the OpenSource library
OpenAL. The internal scene graph of the framework was thereby supplemented with additional
nodes that permit to map an external scene graph − like for example X3D − on these nodes.
However, the internal nodes can be used directly, too. For the adequate rendering of 3D-Sound
by means of HRTFs (Head-related transfer functions) an appropriate sound card was used. Two
user tests with different Augmented Reality scenarios finally served for the examination of the
implementation. The results derived from these tests were in the following already implemented
partially in an additional effects extension that contains reverberation, echos, filters, distortions
etc.
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