The screen displays four pictures: Cow, Rooster, Horse, Mosquito. When you press the PLAY button, you hear a sound and the patient must guess what the sound was by clicking on the picture. The pictures are randomly displayed. There are 4 main sound files: Cow-500Hz, Rooster-1000Hz, Horse-2000Hz and Komar-4000Hz when passing the sound test, build an audiogram with subsequent printing or saving in PDF