The Journal of the Acoustical Society of Korea (한국음향학회지)

The Acoustical Society of Korea (한국음향학회)
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Audio Source Separation Method Based on Beamspace-domain Multichannel Non-negative Matrix Factorization, Part I: Beamspace-domain Multichannel Non-negative Matrix Factorization system

빔공간-영역 다채널 비음수 행렬 분해 알고리즘을 이용한 음원 분리 기법 Part I: 빔공간-영역 다채널 비음수 행렬 분해 시스템

  • 이석진 (서울대학교 전기컴퓨터공학부 뉴미디어통신공동연구소 음향공학연구실) ;
  • 박상하 (서울대학교 전기컴퓨터공학부 뉴미디어통신공동연구소 음향공학연구실) ;
  • 성굉모 (서울대학교 전기컴퓨터공학부 뉴미디어통신공동연구소 음향공학연구실)
  • Received : 2012.02.27
  • Accepted : 2012.05.16
  • Published : 2012.07.31
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Abstract

In this paper, we develop a multichannel blind source separation algorithm based on a beamspace transform and the multichannel non-negative matrix factorization (NMF) method. The NMF algorithm is a famous algorithm which is used to solve the source separation problems. In this paper, we consider a beamspace-time-frequency domain data model for multichannel NMF method, and enhance the conventional method using a beamspace transform. Our decomposition algorithm is applied to audio source separation, using a dataset from the international Signal Separation Evaluation Campaign 2010 (SiSEC 2010) for evaluation.

본 논문에서는 다채널 음향 신호의 음원 분리를 수행하기 위하여, 빔공간-영역에서 다채널 비음수 행렬 분해 기법을 이용하는 음원 분리 시스템을 제안한다. 비음수 행렬 분해(NMF) 기법은 음원 분리에서 최근 널리 쓰이는 알고리즘이며, 특히 최근에는 다채널 비음수 행렬 분해(MC-NMF) 기법으로 발전하여 다채널 음향 신호에 대해서 적용되고 있다. 본 논문에서 제안하는 다채널 비음수 행렬 분해 기법은 빔공간-영역에서 수행되어, 기존의 다채널 비음수 행렬 분해 기법에 비해 좋은 성능을 가진다. 제안되는 비음수 행렬 분해 기법은 SiSEC 2010의 데이터셋을 이용하여 검증되었다.

Keywords

References

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