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 |
|