In this paper, we present a new approach to simultaneously estimate the stacking velocity and zero-offset time of seismic wave propagation. The new approach includes the following steps: preprocessing, structure extraction, and estimation of stacking velocity and zero-effect time. The advantages of the proposed approach are higher resolution and less computation in comparison with the traditional semblance approach. Simulations show good performance of the new approach. ¿ American Geophysical Union 1992