Nature sounds hide noises that disturb us, increase our privacy, facilitate rest and even our concentration when studying and working. The application analyses environmental noise with a microphone and immediately proposes a variety of natural sounds modified to mask a noise/interference. Psychoacoustic algorithms of sound masking are used to hide sound disturbances and give comfort to the user with headphones or speakers. It is known that if the background noise is too low it worsens any problem of insufficient soundproofing. An appreciable solution is the use of relaxing natural sounds (rain, waves, water, etc.) to hide noise disturbances and bring people back in a more human sound dimension.