Butterworth Filter

A Butterworth filter is a type of electronic filter designed to allow certain signals through while blocking others, with a focus on smooth, flat frequency response within its passband. This means it transmits desired signals without distortion and rolls off gradually at the cutoff point, avoiding sharp transitions. It’s commonly used in audio systems, communications, and electronics to ensure clear sound or data by filtering out unwanted high or low-frequency noise, providing a balanced and natural sound or signal quality while maintaining the integrity of the passing frequencies.