一种飞行模拟器音响仿真系统的研究与实现

Research and Implementation of A Sound Simulation System for Flight Simulator

为了使飞行仿真更加逼近真实飞行,给飞行模拟器配置相应的音响系统是十分必要的。提出了一种基于波表合成技术的声音建模方法,和通常在频域建模或插值的方法相比,该方法具有处理速度快、计算简单、编程实现容易、能够方便处理大量声音样本等特点。给出了基于该方法的直升机座舱噪声环境仿真方案并设计实现了基于上述方案的数字音响仿真系统。实验证明,该系统能够较好的模拟直升机飞行过程中座舱内的声音环境从而提高了飞行模拟的逼真度。

For getting high fidelity flight simulation, there is a need for a sound system in a flight simulator. A new method of sound modeling was proposed based on wavetable synthesis technology. Compared with the method of sound modeling or interpolation in frequency domain, the new method features in faster processing, simpler computing and easier programming and it can deal with lots of samples more easily. The method of simulating noise environment of helicopter cockpit based on wavetable synthesis technology was given, and the sound system was also developed using the described method. The experimental results demonstrate the system can well simulate the sound environment of helicopter cockpit in flight, so the fidelity of flight simulation is enhanced.