An auditory illusion is a phenomenon where a sound is perceived differently than it actually is. This can occur due to the way our brain processes sound waves, leading to misinterpretations. For example, the Shepard Tone creates the illusion of a continuously ascending pitch, even though it eventually repeats. These illusions can be influenced by various factors, including context, expectation, and previous experiences. They highlight the complexities of human perception and how our auditory system can be tricked. Understanding auditory illusions can also aid in fields like music, psychology, and acoustics.