Research  Interests:

• Coarse quantization algorithms for oversampled bandlimited functions, in particular sigma-delta quantizers

•  Related Publications:
1.  Stability analysis for several sigma-delta methods of coarse quantization of bandlimited functions, [ ps ] accepted for publication in Constructive Approximation.
2.  Stability and robustness of second-order sigma-delta modulators, in preparation.
3.  Mathematical Properties of Coarse Quantization Schemes in Signal Analysis with New Applications, Ph.D Thesis, PACM, Princeton University. [ps ] [pdf ]

• Coarse quantization of redundant representations,  in particular Weyl-Heisenberg frames in L₂(R).

•  Related Publications:
1. Coarse quantization of highly redundant time-frequency representations of certain classes of square-integrable functions, [ ps ] submitted to Applied and Computational Harmonic Analysis.
2.  Mathematical Properties of Coarse Quantization Schemes in Signal Analysis with New Applications, Ph.D Thesis, PACM, Princeton University. [ ps ] [ pdf ]

• Signal processing, in particular blind separation of speech signals

• Related Publications:
1. Blind Separation of Disjoint Orthogonal Signals: Demixing n Sources from Two Mixtures, (with Alex  Jourjine  and Scott Rickard), Proceedings of the International Conference on Acoustics, Speech, and Signal Processing 2000 (ICASSP'00), Volume 5, pp. 2985-2988.
2. On the W-disjoint orthogonality of speech, (with Scott Rickard), Proceedings of the International Conference on Acoustics, Speech, and Signal Processing 2002 (ICASSP'02) Volume 1, pp. 529-532 .
3. Blind separation of speech mixtures via time-frequency masking, (with Scott Rickard), submitted. [pdf]

Complete CV