基于DirectSound实现三维真实感声音生成

听觉通道是虚拟环境系统中最重要的接口之一，真实感声音模拟是构建高度真实感和沉浸感虚拟环境不可或缺的一部分。DirectSound对三维真实感声音模拟提供了很好的支持，是目前在真实感声音生成领域非常优秀的开发接口。该文简要介绍了真实感声音生成的相关理论，使用DirectSound模拟真实感声音涉及到的几个接口对象，详细论述了影响虚拟环境中三维声音听觉效果的因素。以及如何利用DirectSound程序开发接口实现这些因素对三维声音听觉效果的影响。最后给出了使用DirectSound生成三维真实感声音的具体步骤，并开发了一个简单的测试程序。

Simulation of 3D Realistic Sound Based on DirectSound

Acoustical channel is one of the most important channels of Virtual Environment, and the simulation of 3D realistic sound is an indispensable part for building Virtual Reality system. DirectSound supports the simulation of 3D realistic sound well, it is an excellent API for generating realistic sound. The related theory for generating realistic sound and some important interface objects of DirectSound used for generating 3D realistic sound are briefly introduced in this article, while the factors that influence the 3D realistic sound in Virtual Environment and how to realize the influence of DirectSound are discussed in detail. At last the concrete steps of the simulation of realistic sound using DirectSound are given, and a simple test programming is developed.