数字混响器设计

文中首先引入运用电声原理设计人工混响器的准则.在分析多级延时序列混响及反馈梳状滤波型混响的优缺点基础上,详细讨论了级联全通数字混响系统.重点研究级联全通系统对于人工混响准则的满足情况及计算代价,分析影响混响质量关键的回声密度仿真问题.本文给出了该混响系统中各参数的设计原理,及确定混响时间的方案.实验表明该系统不仅彻底的消除了由于频率密度低而声染色及回声密度低而声摆动效应,而且回声密度与自然声学一致,产生逼近自然声学的人工混响效果.

Digital Artificial Reverberator Design

In this paper,the formulae are indicated firstly to design artificial reverberat or.After analyzing the properties of two reverberators,a connection in series al l-pass reverberation system has been addressed in detail.This system is designe d based on the artificial reverberation formulae,as well as the operation comple xity.The simulation of echo density,which is the crucial reverberation factor,is analyzed.At last,the principles to design the system parameters and the solutio n to reckon the reverberation time are proposed.Experimental results confirmed t hat not only coloration and flutter had been eliminated completely but also the echo density is consistent to the room acoustics,and the natural reverberation e ffect could be simulated vividly.