知识与财富的链接
提出一种改进的5．1通路环绕声的三扬声器虚拟重发系统。本文首先指出,现有的两扬声器虚拟重发存在听音区域窄、声像稳定性差等缺陷。通过理论分析和心理声实验证明,采用一对布置在前方±30°的全频带扬声器和一个前方0°的高频中置扬声器组成5．1通路环绕声虚拟重发系统,不但可提高重发声像的稳定性,且扬声器布置实际可行,信号处理相对简单。因此所提出的虚拟系统及其扬声器布置是适合于电视和多媒体计算机的应用。
An improved three loudspeakers virtual reproduction system for 5.1 channel surround sound is presented. Firstly, it is pointed out that there are some defects in the current virtual reproduction system, including narrow listening area, instability in sound image, etc. Then, it is proved by theory and experiment that by using a pair of full band loudspeakers placed in front ±30° and a tweeter placed in front 0°, the sound image stability of the virtual reproduction system for 5.1 channel surround sound can be improved. This arrangement of loudspeakers is feasible and the signal processing procedure is simple. Therefore the improved system is suitable to be used in TV sets and multimedia computers.
