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| has gloss | eng: For the analog implementation of a biquad filter, check biquad filter. In signal processing, a digital biquad filter is a second-order recursive linear filter, containing two poles and two zeros. "Biquad" is an abbreviation of "biquadratic", which refers to the fact that in the Z domain, its transfer function is the ratio of two quadratic functions: |
| lexicalization | eng: Digital biquad filter |
| instance of | e/Linear filter |
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| media:img | Biquad direct form1.png |
| media:img | Biquad direct form2.png |
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