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Assessment of Hearing - SlideShare
https://www.slideshare.net/shikshachoytoo/assessment-of-hearing-60683455
THRESHOLD TONE DECAY TEST • Measure of nerve fatigue • Use to detect retrocochlear lesions • Normally, a person can hear a tone continuously for 60s • In nerve fatigue, the person stops hearing earlier • The result of the …
An Evaluation of Diagnostic Parameters of Bekesy Audiometry.
https://digitalcommons.lsu.edu/cgi/viewcontent.cgi?referer=&httpsredir=1&article=3051&context=gradschool_disstheses
a Beke'sy-type audiometer using experienced subjects, 1.5decibels/second attenuation rate, 11.0minutes. testing time, low to high frequency direction of sweep. and either a pulsed or continuous tone. Epstein (i960) investigated attenuation rates of. 1, 2, 3, and 6decibels per second, test time, and.
Audiometry - SlideShare
https://www.slideshare.net/humrashamim/audiometry-71752793
pure tone audiometry:definition • measuring relative hearing threshold using pure tones is called pure tone audiometry. • Hearing threshold is typically defined as the lowest (softest) sound level needed for a person to detect a signal approximately 50% of the time • The instrument used in the measurement of auditory threshold is known as ...
Audiometry - SlideShare
https://www.slideshare.net/dotcomguysalman/audiometry
Test method A suitable starting level is a hearing level for speech that is 20-30 dB above the average pure tone hearing thresholds at 500, 1000 and 2000 Hz. Then the speech level is reduced in steps of 5 dB, presenting two test items on each level, until the listener no longer responds correctly to all test items. At this level, a set of test items, consisting of at least ten …
Pure tone audiometry - SlideShare
https://www.slideshare.net/drtbalu/pure-tone-audiometry-29090374
TYPE I AUDIOMETER Most comprehensive equipment It can measure air conduction thresholds between 125 – 8,000 Hz and bone conduction threshold ranging between 250 – 6000 Hz Maximum intensity for air conduction threshold is 120 dB and bone conduction maximum intensity is about 50 dB lower than this value.
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