1. Pure Tone Audiometry (PTA): Measures the softest sounds a person can hear at different frequencies. 2. Speech Audiometry: Assesses the ability to understand speech at different volumes. 3. Tympanometry: Evaluates the functioning of the middle ear. 4. Otoacoustic Emissions (OAEs): Tests the function of the outer hair cells in the cochlea. 5. Auditory Brainstem Response (ABR): Measures the hearing nerve’s response to sounds.