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—Room reverberation is typically the main obstacle for designing robust microphone-based source localization systems. The purpose of the paper is to analyze the achievable performance of acoustical source localization methods when room reverberation is present. To facilitate the analysis, we apply well known results from room acoustics to develop a simple(More)
The problem of MIMO recursive identiication is considered and analyzed within the framework of subspace-based state space system identiication (4SID). With respect to previous contributions to this area, in this paper the use of recent signal processing algorithms for the recursive update of the SVD is proposed. To accommodate for arbitrary correlation of(More)
Subspace estimation plays an important role in, for example, sensor array signal processing. Recursive methods for subspace tracking with application to non-stationary environments , have also drawn considerable interest. In this paper, Instrumental Variable (IV) extensions of the recently developed Projection Approximation Subspace Tracking (PAST)(More)
The main obstacle for designing robust microphone-based source localization systems is the effects of room reverberation. Utilizing results from statistical room acoustics, we analyze the performance of GCC-based methods for time-delay estimation. An interesting outcome of the analysis is that the so-called PHAT time-delay estimator is shown to be optimal(More)
Recursive methods for subspace tracking with applications to 'on-line' direction of arrival estimation, have lately drawn considerable interest. In this paper, Instrumental Variable (IV) generalizations of the Projection Approximation Subspace Tracking (PAST) algorithm are proposed. The IV-approach is motivated by the fact that PAST delivers biased(More)