ORIGINAL ARTICLE |
Commun Sci Disord. 2001;6(1): 1-16.
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Effects of High - Frequency Hearing Loss on Speech Recognition Ability |
Jinhee Park`
, and Junghak Lee`
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Copyright ©2001 The Korean Academy of Speech-Language Pathology and Audiology |
박진희(Jinhee Park)| 이정학(Junghak Lee) |
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ABSTRACT |
In th e cas e of high fr e quen cy he ar ing los s , th e pr imary goal of he ar ing aid fitting s tr ategies is t o mak e th e sp e e ch s ign al audible thr ough pr oviding high - fr e quen cy amp - lification . Howev er , an in cr eas e in audibility does n ot always pr ovide a complete r es tor ation of sp e e ch r e cognition for all h e ar ing - imp air e d lis ten ers . T h e purp os e of this s tudy was to determine th e optimal fr e quen cy r es p ons e ch ar acter is tics of s p e ech r e cognition ability for th e lis ten ers with high - fr equency h e ar ing los s . T wenty adults with n ormal h ear ing and ten adults with high - fr e quen cy s ens or in eur al h e ar ing los s p ar ticip ate din this s tudy . T wenty normal s ubje cts cons is te d of ten males an d ten females with a mean age of 30 ye ars (r anging fr om 25 to 4 5 y ears ). T en h e ar ing - imp air ed adults cons is te d of eight males an d two females with a me an age of 53 y ears (r anging fr om 35 to 80 y e ars ). F or th e normal he ar ing gr oup , high - fr e quen cy h e ar ing los s es wer e s imulat ed. T h e sp e e ch s timuli wer e pr es ent ed t o th e s ubje cts under th e low- p as s filt er e d con ditions with n o- filter ing and five cut - off fr e quen cies of 1, 1.5 , 2 , 3 , an d 4kHz. T h e pr es entation levels wer e var ie d fr om 20 dBHL to 70 dBHL. Wor d r e cognition s cor es (WRSs ) wer e obtain ed with s ix con ditions at e ach pr es ent ation lev el. For th e h e ar ing imp ar e d gr oup , WRSs wer e obt ain e d at the r egular conver s at ion lev el of 50dBHL. Gener ally , th e s imulate d h e ar ing imp air e d gr oup s h owe d high WRSs at th e con dition of no filter ing th an at th e condit ions of v ar ious filter ing . Wh en th e con dition of n o filter ing was comp ar e d with each filter ing con dition , th e differ en ce was s t atis tically s ignificant (p |
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