Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)
- Volume 30 Issue 2
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- Pages.125-131
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- 1994
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- 2671-9940(pISSN)
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- 2671-9924(eISSN)
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)
- Published : 1994.06.01
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