Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
권호 표지

Measurement of Distortion Level of Loudspeaker using Adaptive Filter Algorithm

적응필터 알고리즘을 이용한 스피커의 왜곡율 측정

  • Kim, Cheon-Deok (National Fishers University of Pusan. Dept. of Electric Engineering) ;
  • Ji, Seok-Geun (Kunsan National University.Dept. of Communications)
  • 김천덕 (부산수산대학교 전기공학과) ;
  • 지석근 (군산대학교 통신공학과)
  • Published : 1994.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper describes a method to measure the distortion level of loudspeaker using a LMS(Least Mean Square) adaptive filter. Conventional technique to measure the distortion level uses a band-pass filter with a sharp cut-off frequency characteristics. However. such the band-pass filter has a bed time response characteristics. On the other hand, the proposed method offers us an easy way to measure the specified harmonic distortion level with a small hardware. Moreover, our method is not affected by noise which has no correlation with the test signal, and the measurement can be carried out in a noisy environment. The effectiveness of the proposed method is confirmed by experiment using a loudspeaker in a noisy room.

Keywords