Low-pass Filter

A low-pass filter is a device or process that allows only low-frequency signals to pass through while blocking or reducing higher-frequency signals. Think of it like a window that filters out the high-pitched sounds or fast-changing signals, letting only the steady, slow-changing signals come through clearly. It’s commonly used in electronics and audio systems to smooth out noise or to extract a base signal from more complex data, ensuring the output is cleaner and more stable for analysis or use.