The Sound Hospital is a place that people can experience and collect the “Colour Noise”. “Colour Noise” are noises with different frequency and have different functions for people’s mentality. For example, white noise can help people to concentrate while pink noise is good for relaxation. I used AR technology to lead people to the rooms of the Sound Hospital, where they can experience different “Colour Noises” and choose the ones that they like to mix into a piece of sound that they can take away with themselves.