myNoise is the only place on the Internet that is able to produce genuine grey noise, a noise that feels perceptually flat across all frequencies in the human hearing range.
True sources of grey noise are scarce, because they require taking your hearing thresholds into account, and to generate a sound that is specifically designed for your ears. It also needs to compensate for the particular frequency response of your audio equipment. These are the reasons why most noise providers on the Internet only deliver generic noises such as White, Pink, or Brown noises.
Among all noise colors available, grey noise has the highest efficiency, offering the same therapeutic performance at quieter levels.