A new approach to the realization of nonrecursive digital filters

A new realization of nonrecursive digital filters that are used to operate on analog signals is proposed. This realization requires no multiplications, and exploits the relative simplicity of delta modulation as a means for analog to digital conversion. This realization also permits a mechanization as a "very fast" digital filter, using read-only memory (ROM). An evaluation of this realization in terms of computation time storage requirements and mean-squared error is presented. These characteristics are compared with their counterparts for existing realization methods of nonrecursive digital filters. Computer simulation results that tend to confirm the theoretical results of the error analysis are included.