IIR Filter Explorer
The IIR Filter Explorer is a tool enabling the rapid interactive design of basic Infinite Impulse Response digital filters. At present, the tool supports Butterworth, Chebyshev (type I and II) and Elliptic filters up to 20th order, in low-pass, high-pass, band-pass and notch configurations.
As well as the visual display, there is an option to audition the effect of the filter on a variety of waveforms. An example 'C' implementation of the selected filter is output, for copying to your own project. The implementation can be Nth order for brevity, or a series of biquads for improved stability in more extreme filters.
Filter Parameters
| Type: | |
| Form: | |
| Order: | |
| Samplerate: | |
| Cutoff: | |
| Ripple: | |
| SB-Ripple: | |
| Width: |
Frequency Response
frq pha hpha grpdly s-frq
frq pha hpha grpdly s-frq
Time Response
Input: octave: show play
Input: octave: show play
Pole/Zero Plot
S-Plane Z-Plane
S-Plane Z-Plane
Code: