| 引用本文： |
-
蔡毓,刘贵忠,侯兴松,王海龙.基于多分辨框架下实现数字滤波器[J].广西科学,2001,8(3):180-183. [点击复制]
- Cai Yu,Liu Guizhong,Hou Xingsong,Wang Hailong.Implementation of Digital Filters in the Framework of MRA[J].Guangxi Sciences,2001,8(3):180-183. [点击复制]
|
|
| 摘要: |
| 用复频域(z域)分析方法分析二通道滤波器的结构模型,提出测定信噪比的算法。与数字Hilbert滤波器进行比较,结果表明,在小波域内,基于多分辨框架下,利用二通道滤波器可实现一般数字滤波器滤波效果。在子带间窜拢可忽略情形下,该二通道滤波器可推广到多层次情形。 |
| 关键词: 数字滤波 Hilbert数字滤波器 小波域 滤波器组 |
| DOI： |
| 投稿时间：2001-02-16 |
| 基金项目: |
|
| Implementation of Digital Filters in the Framework of MRA |
|
Cai Yu, Liu Guizhong, Hou Xingsong, Wang Hailong
|
| (Dept. of Info. & Communication Engineering, Telecommunication Institute, Xi'an Jiaotong Univ., Xi'an, Shaanxi, 710049, China) |
| Abstract: |
| For more denoising,a model structure of two canal filter is analyzed in terms of the complex frequency domain (Z domain),and a algorithm for denoising is developed. In comparison with the digital Hilbert filter, the similar filtering result was obtained with two canal filter in the framework of MRA in the wavelet domain. This two canal filter could be employed in multi-layer situation, if the interference among subbands is ignore. |
| Key words: digital filters digital Hilbert filters wavelet domain group of filters |
