Outer ear
Collects sound and guides it through the ear canal to the eardrum.
Understand how hearing works, which signs to notice, and what an audiogram and tympanometry can reveal. A practical guide to help you choose the right next step.
Hearing depends on the outer, middle and inner ear working together with the auditory nerve and brain.
Collects sound and guides it through the ear canal to the eardrum.
The eardrum and tiny middle-ear bones transfer sound vibrations.
The cochlea converts vibrations into neural signals.
The auditory nerve sends information to the brain, where sound becomes meaningful.
Hearing changes often develop gradually. These signs are not a diagnosis, but they are good reasons to seek a professional assessment.
Speech seems unclear in restaurants, groups or other noisy settings.
TV or phone volume needs to be louder than others prefer.
You often ask people to repeat themselves or rely on lip reading.
Ringing, pressure/fullness or a noticeable difference between ears should be checked.
The likely site of the problem helps professionals choose the right tests and management.
Sound transmission is reduced in the outer or middle ear.
The inner ear or auditory nerve pathway is affected.
Conductive and sensorineural components are both present.
Sudden hearing loss, especially in one ear, should be assessed promptly by an ENT specialist rather than treated as a routine appointment.

Pure-tone audiometry measures hearing thresholds across frequencies. The audiogram shows where hearing sensitivity changes and helps identify the degree and pattern of hearing loss.
The horizontal axis shows pitch, from low to high frequencies.
The vertical axis shows the softest calibrated level heard at each test frequency.
Comparing air and bone thresholds helps distinguish major types of hearing loss.
Cut-offs vary slightly across clinical classification systems; a professional interprets the full test, not a single number.
Tympanometry does not measure how well you hear. It measures how the eardrum and middle ear respond while air pressure changes in the ear canal, producing a tympanogram.
A peak near normal pressure is generally consistent with typical middle-ear function.
May occur with middle-ear fluid or a perforation; interpretation also considers ear-canal volume.
May indicate negative middle-ear pressure, often related to Eustachian tube dysfunction.
Hearing threshold
Middle-ear function
Requires a patient response
Objective
Audiogram
Tympanogram
Degree and pattern of hearing loss
Eardrum mobility and middle-ear pressure
This page summarizes Otofon educational materials and general audiology guidance. It does not replace medical diagnosis or advice.
Your first step toward better hearing can start today.