331 11.1 Speech Audiometry

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Author:
shanamd2010
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142483
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331 11.1 Speech Audiometry
Updated:
2012-03-19 11:49:45
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Speech Audiometry
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speech audiometry
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  1. two techniques used in speech audiometry
    • recorded material
    • "live" voice
  2. recorded materials
    inflexible, while no accents, better due to consistant and legal matters
  3. "live" voice
    • microphone
    • accents may be problematic
    • flexible
  4. the speech recognition threshold (SRT)
    • uses spondees
    • sometimes called spondee threshold (ST)
    • essentially, this is a "threshold" for speech stimuli
    • the SRT should agree with the audiogram
  5. how do we reduce info on audiogram into one number (for each year) to compare with the SRT
    • obtain an average of Pure Tone Threshold for each ear
    • two averages (PTA) are used
    • the SRT should be wintin 10dB of the PTA
  6. what are the two averages (PTA) used
    • the 3 frequency (average 500, 1000, and 2000 Hz)
    • the fletcher (average "best two" of 500, 1000, & 2000 Hz)
  7. loudness discomfort level LDL
    • how much loudness can you take?
    • uses continuous discourse
    • Dynamic Range = LDL - SRT
    • helpful in the fitting of hearing aids
  8. most comfortable loudness level (MCL)
    • at what level would you prefer to listen to sound all day long?
    • like the LDL it is obtained with continuous discourse
    • useful in fitting hearing aids
  9. Word Recognition (WR)
    • only measure presented at a set level
    • aka Speech Discrimination
    • tests ability to hear differences in sounds (hat v cat)
    • uses Phonetically Balanced word lists of momsyllables (CVC)
    • measure sometimes called PB-50
    • used diagnostically and sometimes with hearing aids
  10. AuD normally use only
    • 25 words
    • rather than write the word down, phonetically they make an X
  11. PIPB function normal
    • ________
    • /
    • /
    • /
    • /
    • slide 15
  12. PIPB rollover - retrocochlear
    • / \
    • / \
    • / \
    • /
    • /
    • slide 16
  13. Speech audiometry measures
    • SRT speech recognition threshold
    • LDL loudness discomfort level
    • MCL most comfortable loudness level
    • WR word recognition

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