Research InterestsMy main research interests are in the application of optimization methods for developing novel algorithms for signal and image processing applications. Some of my specific research areas include
- Sparse estimation algorithms and their applications in channel estimation
- Acoustic impulse response shaping
- Compressive sensing
Recent Publications L. Krishnan, T. Betlehem, and P.D. Teal. Fast algorithms for acoustic impulse response shaping. To appear in IEEE/ ACM Trans. Audio, Speech & Language Processing, Feb 2019, 27(2), pp. 392-403, DOI: 10.1109/TASLP.2018.2880317
 T. Betlehem, L. Krishnan, and P. Teal. Temperature robust active-compensated sound field reproduction using impulse response shaping. In Proc. IEEE Conf. Acoust., Speech & Sig. Proc., pp. 481-485, Calgary, April 2018.  P.D. Teal, L. Krishnan, and T. Betlehem. Efficient projection onto a low dimensional ball. J. Engineering Optimization, May 2018. DOI: 10.1080/0305215X.2018.1472252  L. Krishnan, T. Betlehem, and P.D. Teal. A statistically robust approach to acoustic impulse response shaping. IEEE Signal Processing Letters, vol.24, no.8, Aug. 2017.  L. Krishnan, P.D. Teal, and T. Betlehem. A robust sparse approach to acoustic impulse response shaping. In Proc. IEEE Conf. Acoust., Speech & Sig. Proc., pp. 738-742, Brisbane, April 2015.