is like white noise but the frequency is lower. You may be familiar with white noise being used to help people get to sleep with some sort of background noise. It's incredibly soothing, isn't as high pitch as white noise, but also isn't as distracting. It also helps add an extra layer of background to mute out any external noises that may sneak through headphones. You can also use this as background music while cleaning, relaxing, studying, or sleeping.