How white noise improves sleep
White noise works by reducing the difference between background sound and sudden noises. When the room is already filled with steady, even sound, a passing car or a creaking floor no longer stands out sharply, so it is far less likely to wake you. Studies in noisy environments have found white noise can help people fall asleep faster.
Getting the best results
Keep the volume moderate — loud enough to blur distractions, no louder. If the bright hiss bothers you, soften it with the Tone slider, or switch to pink or brown noise for a warmer sound. Use the Sleep Timer to fade out after you are asleep.