In virtual reality the display has to produce the immersion in a 3D computer generated world. In addition to the visual and tactile displays, audio is needed. This includes acoustical properties of the environment and the geometrical relationships of the source and listener Data-driven sound can convey simulated properties of the constituents of the environment.
Audio signals provide a higher degree of temporal resolution than visual display.
Audio is also another channel of communication between the user and the environment. Auralization or audio in 3D. Principles. 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.