本文推出不倒地址的快变计算公式，提出编制节省计算时间程序的方法，在地震数字处 理中使用频域时变滤波方案实际计算时间与时域递归滤波相当。对二维滤波讨论了正负速度 区别解决了时域滤波产生坑席现象的问题，计算方法比时域滤波统一，简单，计算时间省。 提出的频域反滤波方案也比时域反滤波计算简单时间省。 In this paper, the fast computing formula of the unbuffed address is introduced, and a method of saving the computing time is proposed. The actual time of the time-varying filtering scheme in the digital processing of seismic data is equivalent to the time domain recursive filtering. This paper discusses the difference between positive and negative velocities on two-dimensional filter to solve the problem of pit phenomenon in time-domain filtering. The calculation method is more uniform and simpler than the time-domain filtering and saves time. The proposed frequency-domain inverse filtering scheme is also simpler than the time-domain inverse filtering calculation.