IIR filters (Infinite Impulse Response)
Filtering practice - Digital linear filtering
Article REF: R1101 V1
IIR filters (Infinite Impulse Response)
Filtering practice - Digital linear filtering

Author : Abdeldjalil OUAHABI

Publication date: January 10, 2021 | Lire en français

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3. IIR filters (Infinite Impulse Response)

3.1 Principle

An IIR or recursive filter is defined by the equation (23) linking input x(k) to output y(k), and its transfer function is given by the relation (24) .

It is interesting to consider the meaning of the term RII or infinite impulse response.

From the expression

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