| Title | 
	Development of Ambulatory Audiometric System by Sound Pressure Level Calibration  | 
					
	| Authors | 
	신승원(Shin, Seung-Won) ; 김경섭(Kim, Kyeong-Seop) ; 윤태호(Yoon, Tae-Ho) ; 이상민(Lee, Sang-Min) ; 송철규(Song, Chul-Gyu) | 
					
					
	| Keywords | 
	 PDA ; Audiometric System ; Pure-tone Audiometry ; Speech Audiometry ; Sound Pressure Level | 
					
	| Abstract | 
	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.  |