| 利用时变全通滤波器减小扩声系统中的梳状滤波失真 |
| |
| 引用本文： | 吴鸣,陈卫松,邱小军,赵其昌.利用时变全通滤波器减小扩声系统中的梳状滤波失真[J].应用声学,2007,26(3):159-163. |
| |
| 作者姓名： | 吴鸣 陈卫松 邱小军 赵其昌 |
| |
| 作者单位： | 近代声学国家重点实验室,南京大学声学研究所,南京,210093 |
| |
| 基金项目： | 国家自然科学基金;高等学校博士学科点专项科研项目;教育部留学回国人员科研启动基金 |
| |
| 摘 要： | 根据人耳对声音信号相位不敏感的原理，采用时变全通滤波器，随机化每个声源输入信号的相位，从而减小声源输出信号之间的相关性，进而减小由于相关产生干涉而带来的梳状滤波失真。数值计算和实验结果均表明用时变全通滤波器随机化声源输入信号的相位能够有效地减小扩声系统中的梳状滤波失真。
|
| 关 键 词： | 扩声系统梳 状滤波失 真时变全通滤波器 |
| 修稿时间： | 2005-09-222006-11-01 |
Using time-varying all-pass filter to reduce comb-filter distortions in sound reinforcement system |
| |
| WU Ming,CHEN Wei-Song,QIU Xiao-Jun and ZHAO Qi-Chang.Using time-varying all-pass filter to reduce comb-filter distortions in sound reinforcement system[J].Applied Acoustics,2007,26(3):159-163. |
| |
| Authors: | WU Ming CHEN Wei-Song QIU Xiao-Jun and ZHAO Qi-Chang |
| |
| Institution: | Key Laboratory of Modern Acoustics and Institute of Acoustics, Nanjing University, Nanjing 210093 |
| |
| Abstract: | To eliminate or reduce the poor performance caused by phase interference effects in sound reinforcement system, a time-varying all-pass filter is adopted. Because the time-varying all-pass filter only changes the phase of the input signal, so it has little effect on audile perception. Both numerical simulation and experiment show that the proposed technique can reduce the comb-filter distortion. |
| |
| Keywords: | Sound reinforcement system Comb-filter distortion Time-varying all-pass filter |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《应用声学》浏览原始摘要信息 |
| 点击此处可从《应用声学》下载免费的PDF全文 |
