虚拟战场的实时四声道立体声合成

Realizing a Real-time 4-Channel Stereo Sound Environment for Virtual Battlefield

面向虚拟战场提出了实现实时四声道立体声合成的简化算法。针对四声道立体声的特殊性 ,首先探讨了四声道立体声系统中扬声器的配置方案。在四声道立体声系统扬声器配置方案的基础上 ,解决了单声源的表示、声强衰减及实时立体声化问题 ,然后提出一种评价混声效果的标准及一个评价声源对整个声音所作贡献的公式 ,并由此提出一个混声公式 ,从而解决了多声源环境的实时混声问题。该套算法用于应用系统 ,取得了较好的效果。

Real time algorithms are given to generate 4 channel stereo sound for virtual battlefield. For the special case of 4 channel stereo sound, first we studied the speaker layout scheme of 4 channel stereo sound system. Based on the given speaker layout, we dealt with the attenuation of sound intensity and turned a mono sound into a stereo one. Then, a criterion for evaluating the effect of sound mixing is proposed. An algorithm based on this criterion is also given to mix sounds randomly in real time. ...