Word-length determination and scaling software for a signal flow block diagram

Software for word-length determination and scaling of a general signal flow block diagram is developed for aiding the development of fixed-point digital signal processing algorithms. A fixed-point performance measure, such as signal to quantization noise ratio, and a hardware cost model are used as constraints to the optimization. Simulation using a real input signal is conducted for the evaluation of fixed-point performance. The number of simulations required for the optimization process is greatly reduced by employing netlist preprocessing and efficient search methods