Objective To present a modified algorithm for reducing reverberation.

In view of the conditions of composite joint kern with and without stiffening ribs,this paper analysed the hysteresis responses and energy-consuming properties of the test specimens.

Faced with side scattering interference, using f-k filtering can effectively remove it; the issue of reverberation can be suppressed by inner mute technique on the basis of deconvolution; as concerns the periodic multiple, we can use predictive deconvolution in τ-p domain.