Question

High pass and low pass filters in digital signal processing

Answer 1

A low-pass filter (LPF) is a filter that passes signals with a frequency lower than a certain cutoff frequency and attenuates signals with frequencies higher than the cutoff frequency. The exact frequency response of the filter depends on the filter design. The filter is sometimes called a high-cut filter, or treble-cut filter in audio applications. A low-pass filter is the complement of a high-pass filter.

A low-pass filter (LPF) is a filter thatpasses signals with a frequency lowerthan a certain cutoff frequency and attenuates signals with frequencies higher than the cutoff frequency. The exact frequency response of the filterdepends on the filter design.