Elsie™ is an uncommon commercial-grade lumped-element ("L-C") electrical filter design and network analysis program, directed toward the engineer, technician or hobbyist involved in that line of work.
Elsie is 32-bit Windows® electrical filter design software nicely written to help engineers design and analyze lumped-element filters in the audio through microwave range. Thanks to the standard interface, all of the various aspects of program operation are quite easy to use. Most options are selected by clicking on buttons. No scripts. Not a DOS lookalike. Schematics are drawn correctly, not using text characters.
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