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  2. Audiometry - Wikipedia

    en.wikipedia.org/wiki/Audiometry

    Speech audiometry also provides information regarding discomfort or tolerance to speech stimuli and information on word recognition abilities. In addition, information gained by speech audiometry can help determine proper gain and maximum output of hearing aids and other amplifying devices for patients with significant hearing losses and help ...

  3. Pure-tone audiometry - Wikipedia

    en.wikipedia.org/wiki/Pure-tone_audiometry

    The results of pure-tone audiometry are however a very good indicator of hearing impairment. Hearing disability is defined by the WHO as a reduction in the ability to hear sounds in both quiet and noisy environments (compared to people with normal hearing), which is caused by a hearing impairment. [ 17 ]

  4. Audiogram - Wikipedia

    en.wikipedia.org/wiki/Audiogram

    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]

  5. Hearing test - Wikipedia

    en.wikipedia.org/wiki/Hearing_test

    The standard and most common type of hearing test is pure tone audiometry, which measures the air and bone conduction thresholds for each ear in a set of 8 standard frequencies from 250Hz to 8000Hz. The test is conducted in a sound booth using either a pair of foam inserts or supraural headphones connected to an external audiometer.

  6. Diagnosis of hearing loss - Wikipedia

    en.wikipedia.org/wiki/Diagnosis_of_hearing_loss

    In conjunction with speech audiometry, it may indicate central auditory processing disorder, or the presence of a schwannoma or other tumor. There are four general configurations of hearing loss: Flat: thresholds essentially equal across test frequencies.

  7. Auditory brainstem response - Wikipedia

    en.wikipedia.org/wiki/Auditory_brainstem_response

    Graph showing a typical Auditory Brainstem Response. The auditory brainstem response (ABR), also called brainstem evoked response audiometry (BERA) or brainstem auditory evoked potentials (BAEPs) or brainstem auditory evoked responses (BAERs) [1] [2] is an auditory evoked potential extracted from ongoing electrical activity in the brain and recorded via electrodes placed on the scalp.

  8. Absolute threshold of hearing - Wikipedia

    en.wikipedia.org/wiki/Absolute_threshold_of_hearing

    A Concise Vocabulary of Audiology and allied topics Archived 2021-03-04 at the Wayback Machine; Fundamental aspects of hearing; Equal loudness contours and audiometry – Test your own hearing; Online Hearing Threshold Test – An alternate audiometric test, with calibrated levels and results expressed in dBHL; Fundamentals of psychoacoustics

  9. Articulation Index - Wikipedia

    en.wikipedia.org/wiki/Articulation_index

    In many industrial settings noise exposure metrics have been established to quantify human exposure to sound. In aerospace settings the Speech Intelligibility Index (SII), published in 1986 by the American National Standards Institute, is a major revision of the AI standard and defines computational methods "that produce results highly correlated with the intelligibility of speech under a ...

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