White noise is a type of sound that contains a mix of all audible frequencies played together at the same intensity. It resembles the static noise you might hear on an untuned radio or television. This consistent sound can help mask other noises in the environment, making it useful for improving focus or aiding sleep. Many people use white noise machines or apps to create this sound in their homes. It can be particularly beneficial for those living in noisy areas or for babies who may find it soothing. Overall, white noise serves as a helpful tool for relaxation and concentration.