De-noising algorithm in multi-scale products based on symmetry wavelet transform
Shumin Zhou · Systems engineering and electronics · 2008
To remove the noise in the signal effectively,a new signal de-noising algorithm based on multi-scale products in wavelet domain is presented.This algorithm utilizes the symmetrical wavelet characteristic which can reflect the signal protrusive position to obtain the modulus maximum value through multiplying neighboring two detail coefficients each other.The value is limited and normalized,then multiplies with the underlying layer detail coefficient to obtain a new detail coefficient,and restructuring to obtain the de-noising signal.The concrete steps to apply the algorithm are given,and the algorithm validity is proved by simulation experiment.