Term
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Definition
| most common type of age-related hearing loss that affects high frequencies to a greater degree than low frequencies |
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Term
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Definition
| a sound containing energy at more than one frequency |
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Term
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Definition
| the smallest unit of speech |
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Term
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Definition
| the sounds of speech or phonemes of all the world’s languages are charted in a diagram with one axis containing decibel levels (dB) and the other axis containing the frequency (Hertz or Hz), the shape is that of a banana |
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Term
| audibility (articulation) index |
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Definition
| method of quantifying the degree to which the speech signal is available to the listener based on the energy of different speech sounds at different frequencies and the listener's hearing sensitivity |
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Term
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Definition
| device that generates the pure tone signals used in testing hearing |
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Term
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Definition
| noise of any kind that interferes with the audibility of another sound, noise used to eliminate participation of the non-test ear while test ear is assessed |
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Term
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Definition
| improved hearing sensitivity noted for binaural masked thresholds when the tone and noise are out of phase, auditory test sensitive to retrocochlear involvement |
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Term
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Definition
| unit of measure for admittance |
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Term
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Definition
| a device that converts one form of energy to another |
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Term
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Definition
| audiometric assessment performed by presenting signals in a sound field through loudspeakers |
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Term
| sound field amplification system |
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Definition
| equipment consisting of strategically placed speakers and a talker-worn microphone used to improve the signal-to-noise ratio in a room |
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Term
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Definition
| device used to measure the sound pressure level in an environment |
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Term
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Definition
| the hearing level dial located in the front of the audiometer to adjust intensity, attenuation refers to reduction in sound energy |
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Term
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Definition
| checking the accuracy of the output of a measuring instrument |
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Term
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Definition
| earphones that rest on the outside of the pinna, TDH-39, TDH-49, and TDH-50 are three types |
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Term
| insert earphones (receivers) |
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Definition
| earphones that fit directly into the ear canal |
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Term
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Definition
| values that are either added or subtracted to obtained thresholds based on the degree to which the audiometer is out of calibration |
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Term
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Definition
| room that has been modified in such a way that ambient noise levels are controlled sufficiently to allow reliable hearing assessment |
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Term
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Definition
| a noise that is perceived in the ear or head that does not come from any external source, ringing, buzzing, throbbing, hissing, roaring |
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Term
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Definition
| electronic device that produces broad or narrow-band noise for purposes of masking tinnitus |
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Term
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Definition
| visual examination of the ear canal and the eardrum with an otoscope |
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Term
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Definition
| partial or complete closing of the ear canal during hearing testing, cause by the force of the headband of earphones and is often related to loss of elasticity in the cartilage of the ear |
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Term
| ascending-descending approach |
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Definition
| down 10 up5, technique used to obtain threshold data in which responses to sound result in a decrease in the intensity of the next sound presented and lack of response results in an increase in the intensity of the next sound presented |
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Term
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Definition
| level at which a stimulus is just barely audible, for pure tones the lowest level at which a response to sound occurs in 50 percent of presented ascending trials |
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Term
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Definition
| combined study of psychology and acoustics |
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Term
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Definition
| earphones that resemble earmuffs and fit around external ear |
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Term
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Definition
| air conduction thresholds are the same in both ears |
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Term
| asymmetrical hearing loss |
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Definition
| air conduction responses from each ear are not the same |
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Term
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Definition
| the dB HL to which threshold is shifted by a given level of noise |
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Term
| bone conduction oscillator |
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Definition
| device used to stimulate the cochlea by vibrating the bones of the skull in bone conduction testing |
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Term
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Definition
| pathway of sound to the cochlea through vibration of the skull |
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Term
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Definition
| a client may fail to respond though he or she heard the tone, or responds when he or she does not hear the tone |
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Term
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Definition
| results from interaction of periodic waveforms (pure tones) of the same frequency produced in a closed sound field, the waves add and subtract to cause doubling of the amplitude at some points and zero amplitude at others |
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Term
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Definition
| responses made to bone-conducted sounds usually during bone conduction testing when vibrations of the bone vibrator are felt rather than heard |
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Term
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Definition
| occurs when the amount of masking delivered to the non-test ear crosses over to the test ear and elevates the threshold in the test ear resulting in an overestimation of the hearing loss in the test ear |
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Term
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Definition
| occurs when insufficient masking is placed in the non-test ear allowing it to participate in the testing process, the response in the test ear may be better than its actual threshold resulting in underestimation of the hearing loss in the test ear |
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Term
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Definition
| improvement (decrease) in the bone conduction threshold of tones of 1,000 Hz and below when the ears are tightly covered with an earphone |
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Term
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Definition
| unit of measure for impedance |
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Term
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Definition
| signals consisting of only one frequency of vibration |
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