Development of Ambulatory Audiometric System by Sound Pressure Level Calibration
Seungwon Shin, Kyeong-Seop Kim, Tae-Ho Yoon, Sangmin Lee, Chul-Gyu Song · The Transactions of The Korean Institute of Electrical Engineers · 2007
In this paper, we implement a PDA(Personal Digital Assistant)-based audiometric system in order to estimate hearing threshold by adopting both pure-tone sound and speech audiometric test system. To estimate a subject's hearing threshold in an ambulatory audiometric test environment, an efficient sound calibration scheme between a PDA and a headphone device is proposed by appling polynomial fitting algorithms in 8-banded frequency ranges.