A delay pedal is an electronic device used by musicians to create echo effects in their sound. It works by recording an audio signal and playing it back after a short period, allowing the original sound to blend with the repeated echoes. This effect can enhance the depth and richness of music, making it popular among guitarists and other instrumentalists. Delay pedals often come with various settings, allowing users to adjust the time between repeats, the number of echoes, and the overall tone. They can be used in different genres, from rock to jazz, and are a staple in many musicians' setups.