Waveform synthesis via inverse Walsh transform
B. D. CHEN, Ya‐Yen Sun · International Journal of Electronics · 1980
The dominant-term concept in representing arbitrary functions using Walsh series is described. To verify dominant-term concept, a Fast Walsh Transform/Inverse Fast Walsh Transform (FWT/1FWT) subroutine following Brown's algorithm and an Approximato IFWT (AIFWT) subroutine have been written in FORTRAN IV and applied to various functions. The results obtained aro quito satisfactory. Based upon the dominant-torm concept, an inexpensive, fully digital, programmable waveform synthesizer lias beon designed and implemented. The various waveforms obtained from the aynthesiier coincide with the results obtaind from computer simulation.