Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)

  • 2005.11a
  • /
  • Pages.469-474
  • /
  • 2005
  • /
  • 1598-2548(pISSN)
The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Development of Directional Digital Hearing Aid Performance Testing System

지향성 보청기 성능 검사 장치 개발

  • 장순석 (조선대학교 정보제어계측공학과) ;
  • 권유정 (조선대학교 대학원 정보제어계측공학과) ;
  • 이제형 (알고코리아)
  • Published : 2005.11.01
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Abstract

The most recent trend on digital hearing aid is to increase the ratio of signal to noise by directivity or to develop noise reduction algorithm inside DSP IC chip. This paper designed, fabricated and tested a digital hearing aid directivity testing device in which a micro-mouse-1ike the stepping motor with a speaker rotates around an examinant. Both ears of the examinant were fixed with ITE hearing aids in order to response to receiving sound. The experimental results were compared with a boundary element method program for verification. The diameter of the directivity testing device was 2 [m] and the micro-mouse was precisely controlled by PICBASIC micro processor.

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