The mixture of all colours creates white light likewise wholefrequency range sounds with constant spectrum creates white noise.The best example is machine noise. White noise is like sounds of ababy inside the womb. Sounds of These apps are also white noise.Baby feels secure as in the womb and stimulates calming reflexes.Colic • Vacuum Cleaner • Hair Dreyer • Washing Machine • WhiteNoise • River • Mixer • Car Cabine • Music Box • Shower • Rain •Ocean • Uterus • My Record