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Secondary Path Estimation Algorithm Based on Residual Music Canceller for Noise Cancelling Headphone

노이즈 캔슬링 헤드폰에 적합한 잔여 음악 제거기 기반의 2차 경로 추정 알고리즘

Youna Ji1
,
Keunsang Lee1
,
Youngcheol Park1*
지 유나1
,
이 근상1
,
박 영철1*
1Division of Computer and Telecommunication Engineering
1연세대학교 컴퓨터정보통신공학부
*교신저자. *Corresponding Author. 
30 September 2015. pp. 377-384
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Abstract

An active noise control (ANC) algorithm for noise canceling headphone is proposed. In this study, the feedback ANC operated with the filtered-x least mean square algorithm (FxLMS) algorithm is used to attenuate the undesired noise. Also an adaptive residual music canceller (RMC) is proposed for enhancing the accuracy of the reference signal of the feedback ANC. Simulation results show that a high quality of music sound can be consistently achieved in a time-varying secondary path situation.

Keywords
Active Noise Control (ANC)
On-line secondary path estimation
Residual Music Canceller (RMC)

본 논문은 노이즈 캔슬링 헤드폰을 위한 능동 소음 제어 알고리즘을 제안한다. 제안 알고리즘은 피드백 구조의 filtered-x least mean square algorithm(FxLMS) 기반 능동 소음 제어 기술을 이용하여 외부에서 헤드폰 내부로 유입되는 소음을 제어한다. 이때 가변적인 2차 경로에 강인하게 대처하기 위해 지속적으로 2차 경로를 추정하는 잔여 음악 제거기 기반의 온라인 2차 경로 추정 알고리즘을 이용한다. 실험을 통해 2차 경로가 변화하는 환경에서 제안 능동 소음 제어 알고리즘은 기존 알고리즘들에 비해 음악 신호의 왜곡 없이 안정적으로 일관성 있는 소음 제어 성능을 보임을 확인하였다.

키워드
능동 소음 제어
온라인 2차 경로 추정
잔여 음악 제거기
References
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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 : 34
  • No :5
  • Pages :377-384
  • Received Date : 2015-06-25
  • Accepted Date : 2015-08-18
  • DOI :https://doi.org/10.7776/ASK.2015.34.5.377
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