Auditory illusions are sounds that trick our brains into perceiving something that isn't there or interpreting sounds in unexpected ways. These illusions can occur due to the way our auditory system processes sound waves, leading to misinterpretations. Common examples include the Shepard Tone, which creates the illusion of a continuously ascending pitch, and the McGurk Effect, where visual cues influence how we hear spoken words. These phenomena highlight the complexities of human perception and how our senses can interact. Auditory illusions are often used in music, psychology, and neuroscience to study sound perception and the brain's processing of auditory information.