Auralization is the process of rendering audio data by digital means to achieve a 3D sound space. From the two signals we extract information about the location of sound sources. The research in psycho-acoustic provides the necessary findings that today's 3D audio systems are based on. Multidimensional audio reproduction is possible with a few speakers. These waves are created through a variety of mechanical processes.
Reflections are multiple.
From the arriving waves the listener extract information about the sound sources and the environment. In case of relative motion source-listener Doppler effect is present. Sound is reflected, attenuated, refracted and also diffract around objects. An auditory space object models the geometry of the enclosures in the world. Our auditory system consists of two ears and a brain.