Equivalence between frequency domain blind source separation and frequency domain adaptive beamforming

Shoko Araki; Shoji Makino; Ryo Mukai; Yoichi Hinamoto; Tsuyoki Nishikawa; Hiroshi Saruwatari

doi:10.1109/ICASSP.2002.5744969

Equivalence between frequency domain blind source separation and frequency domain adaptive beamforming

Shoko Araki, Shoji Makino, Ryo Mukai, Yoichi Hinamoto, Tsuyoki Nishikawa, Hiroshi Saruwatari

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Frequency domain Blind Source Separation (BSS) is shown to be equivalent to two sets of frequency domain adaptive microphone arrays, i.e., Adaptive Beamformers (ABFs). 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 ABF. The unmixing matrix of the BSS and the filter coefficients of the ABF converge to the same solution in the mean square error sense if the two source signals are ideally independent. Therefore, the performance of the BSS is limited by that of the ABF. This understanding gives an interpretation of BSS from physical point of view.

Original language	English
Pages (from-to)	1785-1788
Number of pages	4
Journal	ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume	2
DOIs	https://doi.org/10.1109/ICASSP.2002.5744969
Publication status	Published - 2002
Externally published	Yes

ASJC Scopus subject areas

Software
Signal Processing
Electrical and Electronic Engineering

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Equivalence between frequency domain blind source separation and frequency domain adaptive beamforming. / Araki, Shoko; Makino, Shoji; Mukai, Ryo; Hinamoto, Yoichi; Nishikawa, Tsuyoki; Saruwatari, Hiroshi.

In: ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, Vol. 2, 2002, p. 1785-1788.

Research output: Contribution to journal › Article › peer-review

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AU - Saruwatari, Hiroshi

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Equivalence between frequency domain blind source separation and frequency domain adaptive beamforming

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