speech audiometry - exam 2 Flashcards
speech audiometry
assessment of hearing ability using a speech stimulus
benefits of using a speech stimulus
natural stimulus - we rarely hear pure tones in nature
individuals may have good sensitivity but have difficulty processing speech - more complex stimulus
very useful for assessment of intervention needs - insurance only covers unless speech perception is assessed
speech intelligibility index / audibility index
quantify how much speech will likely be understood from the audiogram
basically measure the same thing
speech banana
we can guess what speech sounds someone will hear based on the audiogram
speech processing levels (easiest –> hardest)
detection/awareness
discrimination
identification/recognition
comprehension
which levels most common in speech audiometry
detection & identification
speech stimuli options
monitored live voice - difficult because you have to make sure your voice is perfectly calibrated
recorded - already standardized
speech detection threshold (SDT)
lowest level at which listener can detect speech
threshold for stimulus
speech recognition test (SRT)
lowest level at which listener can understand speech
threshold for speech identification/recognitioin
word recognition score (WRS)
ability to identify/distinguish speech at supra threshold (above threshold, usually conversation level) levels
usually done w/ background noise so more realistic
SDT stimuli type
“aaaaa”
“baba”
patient’s name
SRT stimuli type
spondees
(2 syllable words w/ equal stress)
hotdog
cupcake
airplane
WRS stimuli type
phonetically balanced words - CVC words
25-50 words per list
SDT procedure
similar to audiometry - raise hand as soon as you hear something
monitored live voice or recorded
SDT results
will never be >5 dB higher than PTA
should be at or below PTA
SDT used…
often in hard to test populations to confirm pure tone audiometry or as only measure of hearing threshold
SRT results
level at which the listener can repeat at least 50% of spondee words correctly at a given intensity
SRT familiarize, why?
recognition test, want them to know what they’re looking for
SRT threshold search
same as SDT
correct REPETITION of the word, not just detection
patient repeats 3 spondees correctly at a given level
SRT results
should be worse than SDT - easier to detect speech than to identify & repeat the word
should be in agreement w/ PTA (withing 5-10 dB)
SRT better than PTA
may be high freq hearing loss
SRT worse than PTA
elderly
central processing disorders
fakers
WRS use
assess if the individual is able to understand speech when presented at a suprathreshold level
extent of speech recognition difficulty
determines retro cochlear loss
PBK
WRS stimuli
phonetically balanced kindergarten
child friendly lists for kids 3.5 & younger
