Sleep Noise is created to help you get to sleep fast. Listeners use noise on the channel to assist in falling asleep and getting a good night sleep (among other things). And Sleepy Time Noise is created intentionally for this purpose. It is a blend of several noise sources mixed into a smooth sound that is not overly bright or muddy to the ear. It is a departure from the noise colors like Pink and White noise with a more brittle top end.
320kbps Mp3 Audio
The video on YouTube