Band Limited Accelerogram Correction Scheme (BLACS), is presented for processing the records of analog accelerograph. The scheme has complete control on the frequency contents of the digitised sequence and first performs band limited interpolation of the nonuniformly spaced samples to get the sequence at 200 SPS. It has the provision to decimate the data to 100 SPS taking account of band limited property. The instrument correction and band pass filtering is then performed in frequency domain. The band pass filtering is done by using |H(jw) of a Butterworth filter which does not introduce any phase shift. In case the corrected accelerogram is required at a higher sampling rate then the scheme performs band limited interpolation to achieve the desired sampling rate. In the second part of this paper a comparison of this scheme is done with that of schemes of Lee and Trifunac, Erdik and Kubin and that of Khemici and Chiang.