WAVE-FORM SYNTHESIS USING WALSH-FUNCTIONS

A software and a microprocessor based hardware for waveform synthesis using Walsh functions are described. The software is based on Walsh fu nction generation using Hadamard matrices and on the truncated Walsh s eries expansion for the waveform to be synthesized. The hardware emplo ys six microprocessor controlled programmable Walsh function generator s (PWFGs) for generating the first six non-vanishing terms of the trun cated Walsh series. Improved approximation to a given waveform may be achieved by employing additional PWFGs.