Signal de-noising algorithm based on multiscale product in wavelet domain
Jia Feng-ting · Journal of Liaoning Technical University · 2005
In view of different properties of signal and noise in wavelet transformation,a new signal de-noising algorithm based on multiscale product in wavelet domain is presented.The initial signal is acted by the multiscale dyadic wavelet transform.Then the wavelet coefficients of the wavelet transform modulus maximum are extracted where the noising wavelet coefficients are removed by the use of adjacent scale wavelet coefficient product.The de-nosing signal is obtained through inverse wavelet transform using wavelet coefficients of modulus maximum.Simulation experiments show that the algorithm can remove the noise and preserve signal’s original features effectively.