Equivalence between frequency domain blind source separation and frequency domain adaptive null beamformers

Shoko Araki, Shoji Makino, Ryo Mukai, Hiroshi Saruwatari

研究成果: Conference contribution

21 被引用数 (Scopus)

抄録

Frequency domain Blind Source Separation (BSS) is shown to be equivalent to two sets of frequency domain adaptive microphone arrays, i.e., Adaptive Null Beamformers (ANB). The minimization of the off-diagonal components in the BSS update equation can be viewed as the minimization of the mean square error in the ANB. The unmixing matrix of the BSS and the filter coefficients of the ANB converge to the same solution in the mean square error sense if the two source signals are ideally independent. Therefore, we can conclude that the performance of the BSS is upper bounded by that of the ANB. This understanding clearly explains the poor performance of the BSS in a real room with long reverberation. The fundamental difference exists in the adaptation period when they should adapt. That is, the ANB can adapt in the presence of a jammer but the absence of a target, whereas the BSS can adapt in the presence of a target and jammer, and also in the presence of only a target.

本文言語English
ホスト出版物のタイトルEUROSPEECH 2001 - SCANDINAVIA - 7th European Conference on Speech Communication and Technology
編集者Borge Lindberg, Henrik Benner, Paul Dalsgaard, Zheng-Hua Tan
出版社International Speech Communication Association
ページ2595-2598
ページ数4
ISBN(電子版)8790834100, 9788790834104
出版ステータスPublished - 2001
外部発表はい
イベント7th European Conference on Speech Communication and Technology - Scandinavia, EUROSPEECH 2001 - Aalborg, Denmark
継続期間: 2001 9月 32001 9月 7

出版物シリーズ

名前EUROSPEECH 2001 - SCANDINAVIA - 7th European Conference on Speech Communication and Technology

Other

Other7th European Conference on Speech Communication and Technology - Scandinavia, EUROSPEECH 2001
国/地域Denmark
CityAalborg
Period01/9/301/9/7

ASJC Scopus subject areas

  • 通信
  • 言語学および言語
  • コンピュータ サイエンスの応用
  • ソフトウェア

フィンガープリント

「Equivalence between frequency domain blind source separation and frequency domain adaptive null beamformers」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル