Blind Source Separation Based on Time-Domain Optimization of a Frequency-Domain Independence Criterion

Separation and Dereverberation Performance of Frequency Domain Blind Source Separation

In this paper, we investigate the separation and dereverberation performance of frequency domain Blind Source Separation (BSS) based on Independent Component Analysis (ICA) by measuring impulse responses of a system. Since ICA is a statistical method, i.e., it only attempts to make outputs independent, it is not easy to predict what is going on in a BSS system physically. We therefore investiga...

Blind source separation and sound source localization on time-frequency domain considering time lag information

Comparison and a Theoretical Link between Time-domain and Frequency-domain Blind Source Separation

The problem of separating convolutive mixtures of unknown time series arises in several application domains, a prominent example being the so-called cocktail party problem, where we want to recover the speech signals of multiple speakers who are simultaneously talking in a room. The room may be very reverberant due to reflections on the walls, i.e., the original source signals sq(n), q = 1, . ....

Discriminant Analysis for ARMA Models Based on Divergency Criterion: A Frequency Domain Approach

The extension of classical analysis to time series data is the basic problem faced in many fields, such as engineering, economic and medicine. The main objective of discriminant time series analysis is to examine how far it is possible to distinguish between various groups. There are two situations to be considered in the linear time series models. Firstly when the main discriminatory informati...

Frequency Domain Blind Source Separation for Many Speech Signals

This paper presents a method for solving the permutation problem of frequency domain blind source separation (BSS) when the number of source signals is large, and the potential source locations are omnidirectional. We propose a combination of small and large spacing sensor pairs with various axis directions in order to obtain proper geometric information for solving the permutation problem. Exp...