"Fade-out" is a technique used in audio and video production where the sound or image gradually decreases in volume or visibility until it disappears completely. This effect is often employed at the end of a song, scene, or presentation to create a smooth transition and signal closure. In film and television, a fade-out can help convey the passage of time or signify the end of a narrative. It is commonly used alongside other techniques, such as fade-in, to enhance storytelling and maintain audience engagement.