Evaluation of separation and dereverberation performance in frequency domain blind source separation

Ryo Mukai, Shoko Araki, Hiroshi Sawada, Shoji Makino

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

In this paper, we propose a new method for evaluating the separation and dereverberation performance of a convolutive blind source separation (BSS) system, and investigate a separating system obtained by employing frequency domain BSS based on independent component analysis (ICA). As a result, we reveal the acoustical characteristics of the frequency domain BSS for convolutive mixture of speech signals. We show that the separating system removes the direct sound of a jammer signal even when the frame length is relatively short, and it also reduces the reverberation of the jammer according to the frame length. We also confirm that the reverberation of the target is not reduced. Moreover, we propose a technique, suggested by the experimental results, for improving the quality of the separated signals by removing pre-echo noise.

Original languageEnglish
Pages (from-to)119-126
Number of pages8
JournalAcoustical Science and Technology
Volume25
Issue number2
DOIs
Publication statusPublished - 2004 Mar
Externally publishedYes

Keywords

  • Blind source separation
  • Convolutive mixtures
  • Frequency domain
  • Impulse response
  • Independent component analysis
  • Performance evaluation

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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