Yonsei Med J.  1997 Aug;38(4):202-205. 10.3349/ymj.1997.38.4.202.

A modified hearing aid fitting procedure using both real ear and 2cc coupler measurement system

• Shim YJ
• Kim HN
• Park K

• KMID: 699951
• DOI: http://doi.org/10.3349/ymj.1997.38.4.202

Abstract

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.

Keyword

Hearing aid fitting, real ear to coupler difference (RECD)

MeSH Terms

Adolescence
Adult
Aged
Child
Child, Preschool
Ear
Hearing Aids*
Human
Infant
Middle Age
Otolaryngology/methods*
Otolaryngology/instrumentation*
Prosthesis Fitting/methods*
Time Factors