Efficacy analysis of harmonic wavelet filtering
Sinopec Jianghan · Progress in Exploration Geophysics · 2007
The advantages of harmonic wavelet in detection of vibration malfunction have been accepted,and it has been widely used in production and scientific research.As an extension of its reconstruction algorithm,harmonic wavelet filtering has also attracted high degree of attention nowadays.In this paper,we introduced the concept of harmonic wavelet and its realizations.Compared to other binary wavelet filtering,harmonic wavelet filtering can overcome the frequency leakage during filtering because of its box shape at frequency domain and complex filtering.Harmonic wavelet filtering functions same as finite impulse response filtering,and cannot solve the frequency leakage and fence effect caused by Fourier transform.Some examples were presented in the paper.