File:Math butterworth.png
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Summary
Butterworth filter.
H(z) = \frac {1+2 z^{-1}+z^{-2}}{1+b^*_{11} z^{-1}+b^*_{12} z^{-2}} \cdot 2^{-k_2} \cdot \frac {1+2z^{-1}+z^{-2}}{1+b^*_{21} z^{-1}+b^*_{22} z^{-2}} \cdot {2^{-k_1}}
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 13:36, 5 January 2026 | | 7,511 × 801 (265 KB) | Dvw (talk | contribs) | Butterworth filter. |
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