Brown Noise for Deep Sleep | Black Screen | 4 Hours

This video combines brown noise with a pure black screen for 4 hours. Brown noise is deeper and softer than white noise and is often used for sleep, relaxation, and background sound. The black screen is OLED-safe and completely dark, with no glow, movement, or flicker. Useful for: – Deep sleep and overnight listening – Masking background noise – Relaxation and calming ambience – Focus and concentration – Dark background use during rest The audio is steady and consistent with no sudden changes. There is no movement on screen and no interruptions throughout the video.