All IIR filters are a transformation from the S domain to the Z
domain with the Bilinear Transformation and the aliasing
correction (not the matched Z transform).
As you can see, radio buttons and boxes are the filter parameters. The button "Calculate" takes the selected parameters and displays the graphical results in the window document. The Frequency Response, Phase and Group Delay are calculated. The Zeros and Poles are plotted on a Z plan. The Impulse and Step Response are also show.
The graph's value pointed by the mouse is displayed in the right side of the status bar.
The C code can be generated and the filter graphical results can be exported in a GIF format file.
|Releases||Description||Software Download Link
||VHDL code for IIR filter.
Add/Remove Pole/Zero possibilities
Filter conversion from S domain to Z domain.
|not yet available
December 6th, 2004
|NEW! Version 0.7 Bug fixes.||Windows95, 98, Me, NT, 2K and XP (206 KB)|
July 26th, 2004
filter coefficients are now quantizied in float, 16-bit or 8-bit.
Synthezis in VHDL (speed or size optimization) with
a Resources Usage Estimation
Version 0.1 Bug fixes.
|Windows95, 98, Me, NT, 2K and XP (205 KB)|
March 12th, 2003
|This first release software can
design IIR and FIR filter with
I, Bessel, Raised Cosine and Rectangular models.
The C code can be generated and the graphical results saved in GIF format file.
Last Update: May 16th, 2012
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