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Sound, Audio Simulation, & AuSIM3D® Technology
Audio simulation is the aural parallel
to its more broadly recognized sister technology, visual simulation.
simulation relies heavily upon computer graphics, audio simulation is typically implemented with
digital signal processing. Both technologies are about synthesizing and presenting images
representing objects or events that may not have physically existed. In the case of a driving
simulator, the simulation system presents visual images of the road, scenery, and other vehicles as
they would be seen by a driver.
To test the true reaction of a driver to presented situations, the system also should present
sounds that occur at the right moment, from the right direction, at the right distance, with the
right transient characteristics, and with the right acoustics so that the driver can recognize
the event. AuSIM specializes in audio simulation requiring instantaneous changes in the
sound presentation such as a vehicle streaking by the listener.
Applications for audio simulation extend far beyond accompanying visual simulation, however. The sound produced by audio simulation is far more real than any conventional sound production method, preserving the human's ability to distinguish simultaneous sounds. Mission-critical applications thus not only include training simulations, but also any situation where an operator/listener must monitor multiple channels.
While audio simulation technology
has been called "3D sound", this same title has been applied to spatialized or surround sound, which are
simpler technologies attempting to leverage traditional sound production techniques. Spatialized or
surround sound are great for creating a threat re effect in one's living room, but they do not help distinguish
multiple alarms in a nuclear power plant control room. AuSIM's interactive audio simulation, on the other
hand, can give a fighter pilot a natural pin-point direction of threat from an approaching enemy.
AuSIM's solutions apply to military, industrial, telecom, and academic research projects, reviving and extending the pioneering work of Crystal River Engineering, who brought interactivity to audio simulation. Unlike CRE, AuSIM's approach is market driven and focused on delivering solutions. AuSIM offers products, licenses, and service to implement solutions. AuSIM promises to advance the highest level of audio simulation and positional 3D audio technology, and provide solutions for high-end simulation, research, and mission-critical applications.
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