摘要
为改进滤波效果,提高去噪质量。通过分析软硬阈值去噪的原理和方法,为小波阈值信号处理提出了一种改进的去噪方法。该方法综合了软硬阈值的特点,对其参数进行优化设计,通过调节参数值以更好地获得阈值估计。针对改进后的去噪算法,通过Matlab仿真比较了传统的小波软硬阈值算法与该算法的消噪效果,结果表明,提出的方法有更好的消噪效果和稳定性。
In order to improve the filtering effect and the quality of denoising,this paper proposes a new denoising method for wavelet threshold signal processing.The method combines the characteristics of soft and hard threshold and optimizes the parameters for better threshold estimation.Through Matlab simulation,the proposed algorithm is compared with the traditional wavelet threshold,which shows that the proposed algorithm had better denoising effect and stability.
出处
《电子科技》
2012年第11期15-17,24,共4页
Electronic Science and Technology
关键词
小波阈值去噪
阈值函数
信噪比
均方误差
wavelet denoising threshold
threshold function
SNR
mean square error
