| 基于鲁棒波束形成的麦克风阵列系统 |
| |
| 引用本文： | 杨毅,余达太,宋辉,刘加.基于鲁棒波束形成的麦克风阵列系统[J].计算机应用与软件,2008,25(4):155-157. |
| |
| 作者姓名： | 杨毅 余达太 宋辉 刘加 |
| |
| 作者单位： | 1. 北京科技大学信息工程学院,北京,100083
2. 清华大学电子工程系网络与人机语音通信研究所,北京,100084 |
| |
| 摘 要： | 为了提高噪声消除的鲁棒性,传统的通用旁瓣消除器采用固定波束形成作为输出的系数约束自适应滤波器,采用CCAF的输出作为输入的标准约束自适应滤波器.此系统的跟踪性能随信号频率变化而改变,并且由于波束带宽的影响使得目标语音在低频发生畸变.采用优化波束形成方法来得到较宽的带宽,对输出进行后滤波处理来消除残余噪声.试验表明本方法可明显提高语音信噪比.
|
| 关 键 词： | 麦克风阵列 波束形成 通用旁瓣消除器 |
| 修稿时间： | 2006年6月28日 |
MICROPHONE ARRAY SYSTEM BASED ON ROBUST ADAPTIVE BEAMFORMING |
| |
| Yang Yi,Yu Datai,Song Hui,Liu Jia.MICROPHONE ARRAY SYSTEM BASED ON ROBUST ADAPTIVE BEAMFORMING[J].Computer Applications and Software,2008,25(4):155-157. |
| |
| Authors: | Yang Yi Yu Datai Song Hui Liu Jia |
| |
| Affiliation: | Yang Yi1 Yu Datai1 Song Hui2 Liu Jia21(School of Information Engineering,University of Science , Technology Beijing,Beijing 100083,China)2(Department of Electronics Engineering,Tsinghua University,Beijing 100084,China) |
| |
| Abstract: | To improve the robustness of noise cancellation,the conventional generalized sidelobe canceller(GSC)consists of coefficient-constrained adaptive filters(CCAF)which take the fixed beamforming as input.The tracking range varies with the signal frequency,and the low frequency target is distorted due to the beam bandwidth.A new structure is proposed in which the fixed beamformer is replaced by the optimized beamformer to achieve broad bandwidth,and the output is filtered by a post-filtering to eliminate the res... |
| |
| Keywords: | Microphone array Beamforming GSC |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
