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As a result of hearing test, hearing thresholds at different frequencies are determined. Despite the errors in the measurements, application can help to diagnose hearing loss. [ 1 ] Audiogram , obtained using mobile application, can be used to adjust hearing aid application .
The result of the test is an audiogram diagram which plots a person's hearing sensitivity at the tested frequencies. On an audiogram an "x" plot represents the softest threshold heard at each specific frequency in the left ear, and an "o" plot represents the softest threshold heard at each specific frequency in the right ear.
They are simple manual physical tests and do not result in an audiogram. Weber test; Bing test; Rinne test; Schwabach test, a variant of the Rinne test; Pure tone audiometry is a standardized hearing test in which air conduction hearing thresholds in decibels (db) for a set of fixed frequencies between 250 Hz and 8,000 Hz are plotted on an ...
The findings of these studies indicate that in general, the results of pure-tone audiometry correspond to self-reported hearing problems (i.e. hearing disability). However, for some individuals this is not the case; the results of pure-tone audiometry only, should not be used to ascertain an individual's hearing disability. [18] [19]
An audiogram is the result of a hearing test. The most common type of hearing test is pure tone audiometry (PTA). It charts the thresholds of hearing sensitivity at a selection of standard frequencies between 250 and 8000 Hz. There is also high frequency pure tone audiometry which tests frequencies from 8000 to 20,000 Hz.
Apart from the already mentioned anticipation and habituation, stimulus persistence (preservation) could influence the result from the method of adjustment. In the descending runs, the subject may continue to reduce the level of the sound as if the sound was still audible, even though the stimulus is already well below the actual hearing threshold.
Otosclerosis results in an audiogram with significant loss at all frequencies, often of around 40 dB(HL). [12] A deficiency particularly around 2 kHz (termed a Carhart notch in the audiogram) is characteristic of either otosclerosis or a congenital ossicular anomaly. [13] Ménière's disease results in a severe loss at low frequencies. [14]
An audiometrist conducts hearing tests, or "audiometric screening", with an Audiometer to establish hearing levels. [3] The results are represented by an audiogram, and are usually interpreted by an audiologist, or a registered Medical Officer, [4] unless the audiometrist is also an audiologist, with the aim of diagnosing hearing loss.