Audiometry and impedance audiometry, as well as the possibility of scheduling audiometry for children from 2 years of age with suspected hearing impairment. Study of auditory neurophysiology by neonatal screening using Brainstem Potentials and Steady State Evoked Potentials, the latter of recent application, consists of an innovative method that allows the estimation of detailed audiometry by frequencies, using the latest generation of computer software. Advice to parents in case of need for hearing aids or specific surgeries.