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Dynamics of speech the diagnostic audiometer test environment patient’s and clinician’s role speech-threshold testing most comfortable loudness and uncomfortable.

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Presentation on theme: "Dynamics of speech the diagnostic audiometer test environment patient’s and clinician’s role speech-threshold testing most comfortable loudness and uncomfortable."— Presentation transcript:

1 dynamics of speech the diagnostic audiometer test environment patient’s and clinician’s role speech-threshold testing most comfortable loudness and uncomfortable loudness speech-recognition testing audibility index speech audiometry

2 intensity frequency suprasegmentals dynamics of speech

3 intensity whisper - 20 dB HL normal conversational speech - 50 to 60 dB loud speech - 70 dB shouting - 90 dB dynamics of speech

4 frequency about 250 to 8000 Hz most important speech sounds - 500 through 6000 Hz dynamics of speech

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7 suprasegmentals are those aspects of speech not attributable to specific speech sounds these include... stress duration pitch juncture dynamics of speech

8 input transducer VU meter and amplifier attenuator (hearing level dial) output transducer equipment

9 normally sound treated booth - mandatory for mlv recommend CDs whenever possible test environment

10 patient must understand the speech stimuli open set - repeat words/phrases or write it down closed set - multiple choice check-off or picture pointing clinician must make sure that stimuli is presented properly patient’s and clinician’s role

11 speech awareness (aka speech detection) threshold speech-recognition threshold (SRT) - lowest intensity where 50% of spondees correctly identified purpose of SRT stimuli - spondees procedures speech thresholds

12 most comfortable loudness level (MCL) found about midway between SRT and UCL uncomfortable loudness level normally between 85 and 105 dB (even for those w/ sensorineural hearing loss) MCL & UCL

13 purpose stimuli monosyllabic word lists - W-22, NU-6, high frequency lists, etc. syllables and sentences - nonsense syllables, SPIN, CID everyday sentences, etc. pictures - WIPI, NU-CHIPS, etc. speech-recognition testing

14 example of nu-6 word list 50 monosyllabic, phonemically balanced words stimuli base, mess, cause, mop, good, luck, walk, youth, etc. speech audiometry

15 example of the word intelligibility by picture identification (WIPI). 25 monosyllabic words - appropriate for children 4 to 6. speech audiometry

16 description ratio or percentage high frequencies (e.g., 2kHz) more heavily weighted. correlates with hearing handicap how is it determined? audibility index

17 summary


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