The quantum rainbow is a ten output analog noise source which provides five very useful spectral densities of transistor noise. each color of noise is buffered to two outputs. the noise colors available are pink, red, blue, purple and or course white. technically speaking, these colors would represent -3db/oct, -6db/oct, +3db/oct, +6db/oct and unity spectral densities. white- flat spectral power density. this is the raw sound of electrons breaking through a reverse biased semiconductor junction. pink- 3db/oct spectral power density. also known as 1/f noise, pink noise exhibits equal power across all proportional frequency bands. red- 6db/oct spectral power density. this spectrum of noise emulates brownian motion, also known as the random or drunken walk. blue +3db/oct spectral power density. the inverse of pink noise - where the power density is directly proportional to the frequency. purple +6db/oct spectral power density. purple noise has a power density directly proportional to the square of the frequency.
