阈值函数在信号去噪中的进一步探讨

Threshold function in signal to further explore the noise

小波去噪理论较完善,算法简单,消噪的效果更好,应用越来越广泛。本人已经提出一种改进的阈值函数,它介于软、硬阈值函数之间,具有更好的光滑性,计算量小。本文尝试研究该函数随着参数的变化的所产生去噪效果的变化,得到该阈值函数具有较好去噪效果的参数。

Wavelet denoising theory more perfect, the method is simple, the de-noising effect is better, more and more widely applied. I have proposed an improved threshold function, it between soft and hard threshold function, has better smoothness, small amount of calculation. This paper tries to study the function with the change of parameters of the denoising effect, get the thresholding function has better denoising effect of the parameters.