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2018 Vol.37, Issue 5 Preview Page

Research Article

An active noise control window system to reduce noise rating in low frequency band

저주파 대역의 소음 평가 지수 개선을 위한 창문형 능동 소음 제어기

Wongeun Oh1∗
오 원근1∗
1순천대학교 멀티미디어공학전공
∗Corresponding Author
30 September 2018. pp. 331-337
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Abstract

In this paper, we apply the NR (Noise Rating) to the evaluation of the residual noise of the window type ANC (Active Noise Control) and study the active noise controller for minimizing the NR value in rooms. We proposed a shape of a noise shaping filter of the Filtered-E LMS (Least Mean Square) algorithm that reduces the NR value within the effective operating frequency band of the ANC. The usefulness of the proposed scheme is verified by simulation and showed that the NR value of the residual noise is lower than the filters used in the conventional psychoacoustic ANC.

Keywords
ANC (Active Noise Control)
ANC windows
NR (Noise Rating)
Room acoustics

본 논문에서는 창문형 능동소음제어(Active Noise Control, ANC)의 잔류 소음의 평가 기준으로 실내소음 평가에서 사용하는 NR(Noise Rating)을 적용하고 이 값의 최소화를 위한 능동소음제어기에 대해서 연구하였다. 이를 위해 Filtered-E LMS(Least Mean Square) 알고리즘을 사용하여 사용자가 설정한 유효 동작 주파수 대역 내에서 NR값을 줄이는 노이즈 쉐이핑(noise shaping) 필터의 형상을 제안하였다. 제안한 필터의 유용성은 시뮬레이션을 통해 검증하였으며, 기존의 심리음향 ANC에서 사용된 필터들과 비교했을 때 잔류 소음의 NR값이 더 낮아지는 것을 보였다.

키워드
능동소음제어(Active Noise Control, ANC)
창문형능동소음제어기
실내소음평가지수
실내음향
References
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S. M. Kuo and D. R. Morgan, Active Noise Control Systems (John Wiley & Sons, New York, 1996), pp. 1-15.
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E. Zwicker and H. Fastl, Psychoacoustics: Facts and models (Springer Science & Business Media, Berlin, 2013), pp. 203-237.
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Information
  • Publisher :The Acoustical Society of Korea
  • Publisher(Ko) :한국음향학회
  • Journal Title :The Journal of the Acoustical Society of Korea
  • Journal Title(Ko) :한국음향학회지
  • Volume : 37
  • No :5
  • Pages :331-337
  • Received Date : 2018-07-24
  • Accepted Date : 2018-09-17
  • DOI :https://doi.org/10.7776/ASK.2018.37.5.331
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