A batch algorithm for blind source separation of acoustic signals using ICA and time-frequency masking

  • Authors:
  • Eugen Hoffmann;Dorothea Kolossa;Reinhold Orglmeister

  • Affiliations:
  • Berlin University of Technology, Electronics and Medical Signalporcessing Group, Berlin, Germany;Berlin University of Technology, Electronics and Medical Signalporcessing Group, Berlin, Germany;Berlin University of Technology, Electronics and Medical Signalporcessing Group, Berlin, Germany

  • Venue:
  • ICA'07 Proceedings of the 7th international conference on Independent component analysis and signal separation
  • Year:
  • 2007

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Abstract

The problem of Blind Source Separation (BSS) of convolved acoustic signals is of great interest for many classes of applications such as in-car speech recognition, hands-free telephony or hearing devices. Due to the convolutive mixing process, the source separation is performed in the frequency domain, using Independent Component Analysis (ICA). However the quality of solution of the ICA-algorithms can be improved by applying time-frequency masking. In this paper we present a batch-algorithm for time-frequency masking using the time-frequency structure of separated signals.