speech recognition threshold level
4.62 speech recognition threshold level. For a given ear and a specified speech signal and method of presentation, the lowest hearing level at which the speech signal is recognized 50% of the time. Abbreviation, SRT; unit, decibel (dB). Annotation Speech recognition threshold was previously called speech reception threshold.
speech level
4.61 speech level. Sound pressure level, or vibratory force level, of a speech signal as measured in an appropriate coupler, ear simulator, or in a sound field, with a specified frequency and time-weighting. Annotation 1 Speech level may be expressed as time-average C-weighted sound level, where the duration of integration is the duration of the speech signal. For speech test lists based on single test items, the integration should not include the silent interval between items. For test lists based on single test items with a carrier phrase, the integration should include only the test items. Annotation 2 For tests of single items, the time-average sound level may be estimated from […]
sensorineural / sensory/neural hearing loss
4.60 sensorineural / sensory/neural hearing loss. Impairment of hearing that occurs when there is damage to the cochlea, cochlear nerve, central auditory pathways, or a combination of these components.
Schwabach test
4.59 Schwabach test. Used to distinguish between conductive and sensorineural hearing losses. A vibrating tuning fork is applied to the mastoid process until the subject can no longer hear it. This time duration is compared with the duration that the tuning fork is heard by a normal ear (usually the hearing examiner’s). If there is a sensorineural hearing loss, the subject will hear the tone for a shorter time than is normal. If there is a conductive hearing loss, the subject will hear the tone longer than normal. See also 4.18.
Rinne test
4.58 Rinne test. Used to distinguish between conductive and sensorineural hearing losses. A vibrating tuning fork is applied to the mastoid process until the subject can no longer hear it. Then it is held close to the subject’s ear. In a normal ear or in one with a sensorineural hearing loss the tone will be heard longer by air- than by bone-conduction, which is called a “positive Rinne.” The tone will be heard longer by bone-conduction than by air-conduction in an ear with a conductive hearing loss, which is called a “negative Rinne.”