A modified hearing aid fitting procedure using both real ear and 2cc coupler measurement system.
In order to reduce the test time in real ear hearing-aid fitting for children, the validity of applying the average real ear to coupler differences (RECDs) in prefitting procedure using a 2cc coupler measurement system was evaluated by checking whether the majority of people's RECDs might occur within 5 dB of the average RECDs (N = 116) in each test frequency and age group. The percentages of occurrence were around 90% in test subjects' RECDs in saturation sound pressure levels (SSPLs) and around 70% in gain in each important test frequency. Appropriate test frequencies in prefitting are 500, 1000, 1500 and 2000 Hz.
Shim
Y J
YJ
Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea.
Kim
H N
HN
Park
K
K
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D004423:Ear; D006310:Hearing Aids; D006801:Humans; D007223:Infant; D008875:Middle Aged; D010036:Otolaryngology / Q000295:instrumentation* / Q000379:methods*; D017755:Prosthesis Fitting / Q000379:methods*; D013997:Time Factors