Pure-tone audiometry is a relatively simple procedure that is performed in every clinic where Dr. Carlo Govoni visits.
Pure Tone Audiometry (PTA) is a subjective and behavioural measurement of hearing threshold. PTA providing the foundamental basis for audiological diagnosis and their management. PTA is the best examination for assessment of a hearing loss.
The audiograms show the frequency in hertz (Hz) on the horizontal axis and a dBHL scale on the vertical axis. The frequencies between 125 Hz and 3.000 Hz represent 77% of the sounds necessary to understand the human voice (importance of speech intelligibility).
Until hearing loss within 20 dB, hearing is normal.
Audiogram of a subject with normal hearing.
The right ear is in red, the left side in blue.
Loss of 25 dB or more is diagnosed as mild hypacusia. The degree of hearing loss is classified as mild, moderate, severe or profound. The results of PTA are a useful indicator of hearing loss.
Audiogram of a subject with severe bilateral hypacusia.
As always in the audiology in red the right ear; in blue left ear.
Audiogram of a subject whit acute acoustic trauma in the right ear
and normal hearing on the left side.
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