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Survey of Audiology
Speech Audiometry
21
Audiology
Undergraduate 2
03/29/2010

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Term
speech audiometry
Definition
assessment of a client's hearing using speech stimuli
Term
sensitivity
Definition
refers to the degree to which a measuring tool identifies individuals who have a specific condition
Term
site of lesion
Definition
an audiologist's goal of determining in which part of the auditory system the disorder lies
Term
monitored live voice testing
Definition
method of performing speech audiometry in which the audiologist presents words through the microphone of the audiometer
Term
speech recognition threshold (SRT)
Definition
the minimum hearing level for speech at which an individual can recognize 50 percent of the speech material
Term
spondee
Definition
two-syllable word with equal stress on each syllable, used in SRT testing
Term
speech noise
Definition
filtered broad band noise designed to simulate the long-term average spectrum of conversational speech, used in masking during speech audiometry
Term
volume units (VU) meter
Definition
display on the audiometer that provides information regarding the intensity of the input signal, typically has a range from -20 dB to +3 dB
Term
word recognition (WR) score
Definition
measure of speech audiometry that assesses a client's ability to identify one-syllable words presented at hearing levels that are above threshold
Term
speech detection (awareness) threshold (SDT)
Definition
the minimum hearing level for speech at which an individual can just discern the presence of speech material 50 percent
Term
monosyllabic words
Definition
words with one syllable
Term
phonetically balanced word list
Definition
word list in which the sounds represented occur proportionally to their occurrence in spoken English
Term
performance intensity (PI)
Definition
percentage of speech understood at a variety of intensity levels from near threshold to well above threshold
Term
PI rollover
Definition
phenomenon that occurs when increasing intensity results in decreasing word recognition, the formula is PB Max - PB Min/PB Max, values at 0.25 to 0.45 can be significant for retrocochlear pathology
Term
retrocochlear pathology
Definition
auditory dysfunction that is beyond the cochlea in the auditory nerve or brain stem
Term
most comfortable level (MCL)
Definition
intensity level at which the client perceives speech or other stimuli to be most comfortable
Term
loudness discomfort level (LDL)
Definition
the level at which the client perceives speech or other stimuli (pure tones) to be uncomfortable to listen to
Term
dynamic range
Definition
decibel difference between the threshold of sensitivity and the loudness discomfort level, can be measured using speech or tones at discrete frequencies, reduced in cases of cochlear hearing loss with abnormal loudness growth
Term
signal-to-noise ratio
Definition
intensity relationship between signal and noise, subtract the level of noise from the level of the of the speech
Term
closed set
Definition
feature of speech audiometry test in which the client chooses the correct response from a given set of choices
Term
white noise
Definition
broad spectrum noise sometimes used in masking during speech audiometry
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