청력검사관련 청력검사시 마스킹 사례

마스킹 사례

공기전도 순음검사시 차폐 "예"

1000Hz Rt: 10dB HL Lt: 50dB HL  처음 AL(Rt)=10(NTE ACT)+15=25dB HL  EMR : 10-90DB HL Min = 50 (TL) ? 40 (IA) = 10  Max = 50(TL) + 40(IA) = 90 "예"    ML(Rt)        TL(Lt)       Response              25                   50               Y              30                   50               Y              35                   50               Y "결과"    Masking range : 25-35 dB HL         Masked ACT : 50dB HL

골도전도 순음검사시 차폐 "예"

1000 Hz 에서 Rt : ACT 10 dB HL Lt : ACT 55 dB HL  BCT 10 dB HL  SML (Rt) = 10 + 10 (OE) + 15 = 35 dB HL  EML : 20 - 50 dB HL Min = 10 + 10 = 20  Max = 10 + 40 = 50  "예" ML(Rt)       TL(Lt)       Response          35           10              N          35           15              N          35           20              N          35           25              N          35           30              N          35           35              N          35           40              N          35           45              Y (Undermasking)   Min ML = 45 (TL) + 10 (OE) = 55   Max ML = 45(TL) + 40 (IA) = 85          65           45              N          65           50              Y          70           50              Y          75           50              Y          80           50              Y   Masking Range : 70 ? 80 dB HL   Masked BCT : 50 dB HL