Listen to Cooling Cycle Hum online. Cooling Cycle Hum is an Instrumental language song and is sung by White Noise Radiance. Cooling Cycle Hum, from the album White Noise Sleep Machine - Soothing Loopable White Sounds Sounds For Deep Sleep, Vol. 2, was released in the year 2025. The duration of the song is 3:25. Download Instrumental songs online from JioSaavn.