Match n Freq - Version 6.2 Match-n-freq™ is a (free) pulse shaping filter program that finds the pole-zero locations of a transfer function, H(s), for a matched-filter design. H(s) equals a -desired- signal (Yout) divided by a given input signal (Yin). Both Yout and Yin are functions of frequency.H(s) has equal sidelobe peak amplitudes in a Bode plot; i.e., Peak i = Peak j for all i, j.Group delay may also be calculated to compliment a given data set, thus, providing a flat group delay. Minimizing Intersymbol Interference in a read/write channel for disc drives by shaping and slimming an isolated readback pulse was the main objective for writing this program.Make your own 'transfer function' app: have a function you want to try? See the Match-n-freq's source code (included in FC-Compiler-install.exe) ... FC-Compiler\demos\nesting\filter.* files. Modify these transfer function to fit your desired function(s). Download the free FC-Compiler™ that you will need to re-compile your version of your 'Match-n-freq' program.For more info, see Kost, R. and P. Brubaker; 'Arbitrary equalization with simple LC structures'; IEEE Transactions on Magnetics, Nov. 1981, pp 3346-3348 or visit fortranCalculus.info/apps/match-n-freq.html .Another improved productivity example do to using Calculus-level Problem-Solving.