💤Ultimate Sleep & Study Sound Machine: 10 Hours of White Noise on Black Screen💤 • 💤Ultimate Sleep & Study Sound Machine: 10 ... Fall asleep fast and stay asleep with this soothing white noise. Relaxing white noise is perfect for sleep, study, relaxation, meditation, or any time you need to focus or block out noise. This 10-hour white noise black screen video features a dark screen with no distractions, providing a calming and immersive experience that helps you fall asleep fast and stay asleep. White noise is a constant, broadband sound that can help to mask other noises and create a more relaxing environment for sleep. It can be used to block out traffic noise, construction noise, or other unwanted sounds that can interfere with sleep. White noise can also help to reduce stress and anxiety, and it can be used to improve focus and concentration.