On Joint Dereverberation and Single Moving Source Separation with Online Source Steering

To solve the Blind Source Separation (BSS) problems in time-variant and highly reverberant environments, an online joint optimization algorithm for Weighted Prediction Error (WPE)-based dereverberation and Independent Vector Analysis (IVA)-based source separation (online WPE-IVA) has been reported. On the other hand, Online Source Steering (OSS) was recently introduced for filter updating in online IVA with low computational cost for a target-source tracking task where only one speaker is moving. Inspired by this work, we integrate OSS into online WPE-IVA, aiming to reduce the computational cost of updating separation filters. Experimental results show that our proposed method reduces computational costs while achieving comparable separation performance to conventional online WPE-IVA in target-source tracking tasks in highly reverberant environments.