Using Time Convolution Method to compute Optimal Filtering Coefficients for LARG electromagnetic calorimeter

In this note we describe a method using time convolution to predict the physics pulse shape, starting from the calibration pulse shape, in order to compute the optimal filtering coefficients to reconstruct energy and time for electromagnetic cells of the liquid argon electromagnetic barrel calorimeter. Using this method, the uniformity of response to the cells inside a barrel module remains inside 0.6\%.