摘要
从自适应滤波器的基本原理出发,利用自适应滤波器对白噪声干扰下的语音信号进行恢复处理,研究自适应算法不同步长对处理结果的影响.理论分析及实验结果表明,在合适的步长下,采用Least Mean Squarc(LMS)算法自适应滤波器,从被噪声干扰的语音信号中恢复实际信号,其偏差在工程上可以接受,而且算法实现简单,具有较好的消噪效果.
The voice signal disturbed by noise is processed by using adaptive filter,the influence of adaptive algorithm step on the result is discussed.Theoretical analysis and experimental results show that the Least Mean Square(LMS) adaptive filter algorithm can recover actual signal from voice signal disturbed by noise in the optimization algorithms step.It makes a little deviation from standard value and the simple algorithm is feasible for renewing the voice from noise disturbed signal.
出处
《陕西师范大学学报(自然科学版)》
CAS
CSCD
北大核心
2009年第3期42-46,共5页
Journal of Shaanxi Normal University:Natural Science Edition
基金
陕西省自然科学基金资助项目(SJ08A03)
关键词
自适应滤波器
LMS算法
恢复
adaptive filter
Least Mean Squarc(LMS) algorithm
renewing