计算机工程与应用Issue(9)：200-203,224,5.DOI:10.3778/j.issn.1002-8331.1311-0031
变步长比例归一化子带自适应滤波算法研究
Study of variable step-size proportionate normalized sub-band adaptive filtering algorithm
楼天良 1侯楚林2
作者信息
- 1. 义乌工商职业技术学院 机电信息分院，浙江 义乌 322000
- 2. 中国人民解放军91872部队
- 折叠
摘要
Abstract
To deal with the trade-off between the mis-adjustment and the convergence speed in constant step-size adaptive filtering algorithms for under-modeling acoustic echo cancellation, a variable step-size proportionate normalized sub-band adaptive filtering algorithm, namely VSS-PNSAF, is proposed. Taking into account under-modeling noise and disturbance noise with a great impact on the performances of acoustic echo cancellation applications, the proposed algorithm obtains a step size control approach for VSS-PNSAF by forcing the posterior error to cancellnegative effect of these noise and using the relation between the posteriori and the priori error signals. Echo cancellation simulation results confirm that the pro-posed algorithm can constitute a significant improvement in the convergence speed with very small mis-adjustment when compared with the constant step-size PNSAF algorithm.关键词
欠定模型/回声消除/稀疏冲激响应/变步长Key words
under-modeling/acoustic echo cancellation/sparse impulse response/variable step size分类
信息技术与安全科学引用本文复制引用
楼天良,侯楚林..变步长比例归一化子带自适应滤波算法研究[J].计算机工程与应用,2014,(9):200-203,224,5.
