Does your hearing age match your real age? Under 50: 12,000 Hz Under 40: 15,000 Hz Under 30: 16,000 Hz Under 20: 17,000 Hz 👵 As we age, we typically experience a decline in our ability to hear high-frequency sounds due to presbycusis, or age-related hearing loss. This occurs primarily because of damage to the tiny hair cells in the cochlea that detect high frequencies, structural changes in the cochlea, and degeneration of the auditory nerve. 👂 Cumulative noise exposure over a lifetime and cer