Analogue filter

An **analog filter** is an electronic circuit that processes continuous signals to allow certain frequencies to pass through while attenuating others. These filters are typically used in applications such as audio processing, radio frequency (RF) communication, and signal conditioning. Analog filters can be classified based on their frequency response characteristics, which include: 1. **Low-pass filters**: Allow signals with frequencies below a certain cutoff frequency to pass while attenuating frequencies above that cutoff.