Match n Freq 6.811

Pulse shaping filter program that finds the pole-zero locations of a transfer function, H(s), for a matched filter. H(s) equals a -desired- signal (Yout) divided by a given input signal (Yin). Both Yout and Yin are functions of frequency.

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.

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 goal-driven.net/apps/matched-filter.html .Another improved productivity example do to using Calculus-level Problem-Solving.

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Requirements:	Win 95/98 with 16-bit DOS Platform + VB6 RunTime files
Release Info:	Major Update on Jan 17, 2024
Release Notes:	Several equations found to have errors (from 1980!) … see ‘factor' routine for more. Group Delay definition on the internet changed the way it is calculated here … Group Delay = - Partial[ H( j ?)] / ? … see ‘gDelay' routine in ‘freq*.fc' file.
Related Tags:	Matched Filter pulse slimming pulse shaping Intersymbol Interference Optimization