Audio effects are tools used in music and sound production to alter or enhance audio signals. They can change how a sound feels or sounds, making it more interesting or fitting for a particular style. Common audio effects include reverb, which adds a sense of space, and delay, which creates echoes. These effects can be applied to vocals, instruments, or any sound to create a unique listening experience. Producers and musicians often use audio effects to express their creativity. For example, adding distortion to a guitar can give it a gritty, powerful sound, while using chorus can make a voice sound fuller and richer. By experimenting with different effects, artists can develop their own signature sound.