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Desert Sage
0I was surprised to see the trademark for "FILSYN" expired in 2022. Filsyn started as a fortran batch program in the mid-1960's. Later on it became Super-Filsyn and found new life on PC computers. I was fortunate enough to have Dr. Szentermai as an instructor for Filter Synthesis at Santa Clara University in the 1980's. He deserves to be in the hall of fame of this site.
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