Constructing Time-Frequency Dictionaries for Source Separation via Time-Frequency Masking and Source Localisation

Authors:
Ruairí Fréin;Scott T. Rickard;Barak A. Pearlmutter
Affiliations:
Complex & Adaptive Systems Laboratory, University College Dublin, Ireland;Complex & Adaptive Systems Laboratory, University College Dublin, Ireland;Hamilton Institute, National University of Ireland Maynooth, Co. Kildare, Ireland
Venue:
ICA '09 Proceedings of the 8th International Conference on Independent Component Analysis and Signal Separation
Year:
2009

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Abstract

We describe a new localisation and source separation algorithm which is based upon the accurate construction of time-frequency spatial signatures. We present a technique for constructing time-frequency spatial signatures with the required accuracy. This algorithm for multi-channel source separation and localisation allows arbitrary placement of microphones yet achieves good performance. We demonstrate the efficacy of the technique using source location estimates and compare estimated time-frequency masks with the ideal 0 dB mask.