基于DirectSound的飞行训练器音响系统仿真

声音仿真技术是虚拟现实技术的一个重要组成部分。它主要研究如何在虚拟环境中模拟现实中实体真实状态的声音，以加强虚拟环境给人的沉浸感。随着计算机技术的飞速发展以及DSP的广泛应用，数字法声音仿真将成为声音仿真技术的主流，但其不同实现方法却各有利弊。为了更有效地将不同实现方法的优势有机地结合起来，该文以DirectSound组件在声音仿真中的使用方法和wav文件的结构为基础，基于对飞行训练器音响系统仿真的研究，介绍了目前声音仿真技术中的不同实现方法，分析了各自的优缺点及不同音效应采用的仿真方法，最后以发动机声音仿真为例详细介绍了声音的建模合成方法的实现从而展示了本方法的优越性。

Simulation of FTD Sound System with DirectSound

Sound simulation is an important part of virtual reality. It mainly studies how to simulate the sound effect of reality. With the rapid development of computer technology and extensive application of DSP, the digital method of sound simulation will be dominant. The article first introduces DirectSound component and the structure of wav file. Based on the simulation of a flight training device (FTD) sound system, it introduces the different implementation methods of sound simulation, analyzes their virtues and disadvantages as well as the appropriate simulation implementation to the different sound effect. Finally, it expatiates the method of sound modeling and synthesis based on the simulation of aircraft engine sound.