计算机技术与发展Issue(11)：159-161,3.DOI:10.3969/j.issn.1673-629X.2014.11.040
基于离散小波变换的信号分解与重构
Decomposition and Reconstruction of Signal Based on DWT
摘要
Abstract
To simplify numerical calculation and theoretical analysis,wavelet transform needs to be discrete in practical application. The basic theory of Fourier transform and wavelet transform,the principle and method of signal decomposition and reconstruction based on Discrete Wavelet Transform (DWT) is introduced. Using the functions of MATLAB wavelet toolbox,the one-dimensional signal and speech signal are decomposed and perfectly reconstructed,and the analysis comparison is also made. The simulation results show that u-sing DWT can gain good results,when to decompose,the average similarity and detail information can be acquired effectively,and the re-construct signal loses little compared with the original signal.关键词
离散小波变换/MATLAB/分解/重构Key words
Discrete Wavelet Transform (DWT)/MATLAB/decomposition/reconstruction分类
信息技术与安全科学引用本文复制引用
邵婷婷,白宗文,周美丽..基于离散小波变换的信号分解与重构[J].计算机技术与发展,2014,(11):159-161,3.基金项目
陕西省教育科研项目(12JK1004) （12JK1004）
延安市科学技术研究发展计划项目(2012kg-07) （2012kg-07）
