ROBUST ONLINE OVERDETERMINED INDEPENDENT VECTOR ANALYSIS BASED ON BILINEAR DECOMPOSITION
Kang Chen, Xianrui Wang, Andreas Brendel, Gongping Huang, Zbyněk Koldovský, Jingdong Chen, Jacob Benesty, Shoji Makino
Abstract
Online blind source separation is essential for both speech communication and human-machine interaction. Among existing approaches, overdetermined independent vector analysis (OverIVA) delivers strong performance by exploiting the statistical independence of source signals and the orthogonality between source and noise subspaces. However, when applied to large microphone arrays, the number of parameters grows rapidly, which can degrade online estimation accuracy. To overcome this challenge, we propose decomposing each long separation filter into a bilinear form of two shorter filters, thereby reducing the number of parameters. Because the two filters are closely coupled, we design an alternating iterative projection algorithm to update them in turn. Simulation results show that, with far fewer parameters, the proposed method achieves improved performance and robustness.
BibTeX
@inproceedings{icassp2026_robustonlineover,
title = {ROBUST ONLINE OVERDETERMINED INDEPENDENT VECTOR ANALYSIS BASED ON BILINEAR DECOMPOSITION},
author = {Kang Chen and Xianrui Wang and Andreas Brendel and Gongping Huang and Zbyněk Koldovský and Jingdong Chen and Jacob Benesty and Shoji Makino},
booktitle = {ICASSP 2026},
year = {2026}
}