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  • Speech Audiometry

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Speech audiometry has been a fundamental tool in the assessment of hearing loss. It provides information concerning both hearing sensitivity to speech stimuli and hearing acuity to understand various speech materials at suprathreshold levels. In everyday clinical practice, the pure-tone threshold test is preferred for hearing loss patients because of its simplicity. However, speech sound recognition tests at suprathreshold level are indispensable in the evaluation of hearing acuity.<br>Speech test materials for use in speech audiometry should be chosen with careful consideration of the linguistic characteristics of the patients' mother tongue. The speech recognition threshold is measured by the use of Spondaic word lists in the US, whereas lists of single digit numerals are used in Japan. Suprathreshold speech-sound recognition testing is performed using phonetically balanced monosyllabic word lists in the US, whereas meaningless monosyllables are used in Japan, which allows a simple dictation method to be used for response testing.<br>Speech audiometry is performed using the mother tongue of the patient. Even though linguistic difference may influence the establishment of a fundamental test method, the principle of the test would not be affected.<br>Speech audiometry can help validate the impact of intervention using hearing aids. The results of cochlear implants can be evaluated directly by speech-sound recognition testing. Also, speech audiometry facilitates audiological rehabilitation in postoperative cases with cochlear implants.

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