IIR high pass filter

1. What is IIR high-pass filter?
2. What are IIR filters used for?
3. Are IIR filters low pass?
4. Is IIR better than FIR?

What is IIR high-pass filter?

A high-pass filter (HPF) is an electronic filter that passes signals with a frequency higher than a certain cutoff frequency and attenuates signals with frequencies lower than the cutoff frequency.

What are IIR filters used for?

IIR (infinite impulse response) filters are generally chosen for applications where linear phase is not too important and memory is limited. They have been widely deployed in audio equalisation, biomedical sensor signal processing, IoT/IIoT smart sensors and high-speed telecommunication/RF applications.

Are IIR filters low pass?

Simple infinite impulse response filter

; the system has more inertia. This filter is an infinite-impulse-response (IIR) single-pole low-pass filter.

Is IIR better than FIR?

The advantage of IIR filters over FIR filters is that IIR filters usually require fewer coefficients to execute similar filtering operations, that IIR filters work faster, and require less memory space. The disadvantage of IIR filters is the nonlinear phase response.