“…Coefficient truncation subsequently appeared in other fields like speech processing [5] and control [6]. Several methods have been proposed for coefficient truncation: exhaustive search over possible truncated coefficients [3], successive truncation of coefficients and reoptimization over remaining ones [4], [7], local bivariate search around the scaled and truncated coefficients [8], tree-traversal techniques for truncated coefficients organized in a tree according to their complexity [9], [10], coefficient quantization using information-theoretic bounds [11], weighted least-squares [12], simulated annealing [13], [14], genetic algorithms [15]- [17], Tabu search [18], design of optimal filter realizations that minimize coefficient complexity [13]. Other approaches have formulated the problem as a nonlinear discrete optimization problem [19], or have used integer programming techniques [20]- [22].…”