环绕声场的模拟

Simulation of Sorround Sound Field

本文提出一种运用电声器件在双通路立体声放声中模拟厅堂声学特性的方法。其中采用人工混响元件与相移电路等相结合,模拟了混响声场的漫射感觉。并且还可通过调节混响时间,混响信号的频响特性等,模拟出不同的演奏厅堂的声学特性,以适应不同的放声要求。此方法比较简单,可适用于家庭放音的要求。文中给出了实验的基本原理、方块图和一些实验结果。

In this paper, a method of simulating the acoustics characteristics of auditorium using electroacoustic devices in two channel stereo sound production is given. By means of reverberation device and phase-shift circuit,diffusion feeling of reverberation sound field has been simulated. By adjusting the reverberation time and frequency response characteristics of reverberation signal,it is possible to simulate the acoustical performances of various playing auditorium and to meet the different demands in production. This method is simple and can be used in home sound production. The fundamental principle, block diagrams and some experimental results are given.