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Audiology and Speech Research > Volume 12(3); 2016 > Article
Audiology and Speech Research 2016;12(3): 144-149.
Published online: July 31, 2016.
doi: http://dx.doi.org/10.21848/asr.2016.12.3.144
청력선별형 순음 청력검사기의 개발
이강호1, 이동규1, 권오원1, 최철희2,3,4
1한국기계연구원 대구융합기술연구센터
2대구가톨릭대학교 언어청각치료학과
3생체모방감각제어연구소
4가톨릭청각음성언어센터
Development of Air Conduction Audiometer for Basic Hearing Screening
Kang-Ho Lee1, Dongkyu Lee1, Ohwon Kwon1, Chul-Hee Choi2,3,4
1Daegu Research Center for Medical Devices, Korea Institute of Machinery and Materials, Daegu, Korea
2Department of Audiology and Speech-Language Pathology
3Research Institute of Biomimetic Sensory Control
4Catholic Hearing Voice Speech Center, Catholic University of Daegu, Gyeongsan, Korea
Correspondence  Chul-Hee Choi ,Tel: +82-53-850-2541, Fax: +82-53-359-0780, Email: cchoi@cu.ac.kr
Received: June 7, 2016; Revised: June 28, 2016   Accepted: June 29, 2016.  Published online: July 31, 2016.
ABSTRACT
Purpose:
An air conduction audiometer was developed for basic hearing screening. This study introduces the hardware platform and development technologies.
Method:
The developed platform includes a pure tone generator and tone switching method, which is capable of customizing the test frequencies and adjusting pure tone output level.
Results:
The developed audiometer was evaluated its performance according to the international standards. The pure tone output level was compared with conventional products. The attenuator shows good linearity with a deviation of ±0.2 dB. The output tone has a frequency error under ±1% and total harmonic distortion of 0.44%. Additionally, the audiometer was evaluated in terms of on/off ratio, crosstalk and rise/fall time during tone switching.
Conclusion:
Through audiometer development, we expect to increase the understanding of pure tone audiometric device and calibration knowledge.
Key Words: Pure tone, Air conduction, Audiometer, Frequency, Output level
중심단어: 순음· 기도전도· 청력검사· 주파수· 출력강도
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