Digital filters are tools used in signal processing to modify or enhance digital signals, such as audio or images. They work by applying mathematical algorithms to the data, allowing us to remove unwanted noise, emphasize certain frequencies, or even create special effects. For example, a digital filter can help improve the clarity of a song by reducing background noise or enhancing specific instruments. There are various types of digital filters, including low-pass filters, which allow low frequencies to pass while blocking high frequencies, and high-pass filters, which do the opposite. These filters are essential in many applications, from music production to image editing, helping to achieve the desired quality and clarity in digital media.