Design of Alarm System Based on Three-dimensional Audio Technology

There is intensive information to display in the aero cockpit, so it is easy to lose observation signal by vision observation, which leads to disadvantageous effects on the flight control. According to human hearing characteristics, this paper analyzes a model of alerting system on the plane by using the virtual auditory display technology. Furthermore, it solves the key methods such as how to product and interpolate the head-related transfer function (HRTF) data, how to simulate the moving sound source’s distance and Doppler shift, and how to smooth transition of the sound signals. Simulation results show that the method provides the spatial audio image of the moving object, which can bring on a fast attention from the pilot who will dispose in time, and can become a new measure to improve the flight control.