Issues in frequency domain blind source separation - a critical revisit

Author

Robledo-Arnuncio, Enrique ; Juang, Biing-Hwang

Author_Institution

Center for Signal & Image Process., Georgia Inst. of Technol., Atlanta, GA, USA

Volume

5

fYear

2005

fDate

18-23 March 2005

Abstract

One of the most important problems in frequency domain blind source separation (FDBSS) is the inconsistency across frequency in the permutation of the source estimates. According to previous studies, this problem can be reduced significantly by constraining the length of the unmixing filters. This improvement has been attributed to the smoothing of the unmixing frequency response. In this paper we study the effect of modifying these length constraints taking into account the circularity of the IDFT, and we show that the smoothing of the unmixing frequency response alone can not account for the improvements in performance.

Keywords

blind source separation; frequency response; frequency-domain analysis; independent component analysis; signal detection; smoothing methods; speech processing; FDBSS; IDFT circularity; frequency domain blind source separation; length constraints; source estimate permutation frequency inconsistency; speech signals; unmixing filter length; unmixing frequency response smoothing; Blind source separation; Filters; Frequency domain analysis; Frequency estimation; Frequency response; Higher order statistics; Image processing; Signal processing; Time measurement; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). IEEE International Conference on

ISSN

1520-6149

Print_ISBN

0-7803-8874-7

Type

conf

DOI

10.1109/ICASSP.2005.1416295

Filename

1416295