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Michael T. Johnson, Ph.D., P.E.
Research Interests
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Signal processing
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Speech recognition
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Microphone arrays
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Bioacoustics and animal communication
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Natural language understanding
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Machine learning
Professional Preparation
Purdue University |
Ph.D. |
2000 |
Electrical Engineering |
University of Texas at
San Antonio |
M.S. |
1994 |
Electrical Engineering |
LeTourneau University
Longview, TX |
B.S. |
1990 |
CSE |
LeTourneau University
Longview, TX |
B.S. |
1989 |
Electrical Engineering |
Honors
| 2005 |
Receipient, HKN EECE Teacher of the Year Award, Marquette University |
Professional Activities
Professional Engineer, State of Wisconsin |
Senior Member, Institute of Electrical and Electronic Engineers (IEEE)
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| IEEE Signal Processing Society |
| IEEE Computer Society |
| Member, American Association for Artificial Intelligence (AAAI) |
| Member, Association of Computing Machinery (ACM) |
| Member, Association of Computational Linguistics (ACL) |
| Member, Sigma Xi honor society |
| Member, Eta Kappa Nu engineering honor society |
| Member, Upsilon Pi Epsilon computer science honor society |
Current Research
- Dynamical systems algorithms for time-domain speech recognition
- Speech enhancement using microphone arrays
- Application of speech recognition algorithms to animal vocalizations for identification and behavioral classification
Selected Recent Publications
Richard J. Povinelli, Michael T. Johnson, Andrew C. Lindgren, Felice Roberts, Jinjin Ye, “Statistical Models of Reconstructed Phase Spaces for Signal Classification”, IEEE Transactions on Signal Processing, in press |
Michael T. Johnson and Richard J. Povinelli, “Generalized phase space projection for nonlinear noise reduction”, Physica D, No. 201, 2005, pp 306-317 |
Kevin M. Indrebo, Richard J. Povinelli, and Michael T. Johnson, “Sub-banded Reconstructed Phase Spaces for Speech Recognition”, Speech Communication, special issue on non-linear and non-conventional speech processing, in press |
Patrick J. Clemins, Michael T. Johnson, Kirsten M. Leong, and Anne Savage, “Automatic Classification and Speaker Identification of African Elephant (Loxodonta Africana) vocalizations”, Journal of the Acoustical Society of America, Volume 117, No. 2, February 2005, pp 956-963 |
Michael T. Johnson, Richard J. Povinelli, Jinjin Ye, Xiaolin Liu, Andrew Lindgren, and Kevin Indrebo, “Time-Domain Isolated Phoneme Classification using Reconstructed Phase Spaces”, IEEE Transactions on Speech and Audio Processing, Vol. 13, No. 4, July 2005, pp 458-466 |
Yang Liu, Mary P. Harper, Michael T. Johnson, and Leah H. Jamieson, “The Effect of Pruning and Compression on Graphical Representations of the Output of a Speech Recognizer”, Computer Speech and Language, Volume 17, 2003, pp. 329-256 |
Johnson M. T., Lindgren A. C., Povinelli R. J., Xiaolong Yuan, ‘Performance of nonlinear speech enhancement using phase space reconstruction,’ 2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, vol.1, 2003, pp. I-920-3. |
| Clemins P, J. and Johnson M. T., ‘Application of speech recognition to African elephant (Loxodonta africana) vocalizations,’ 2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, vol.1, 2003, pp.I-484-7. |
| Lindgren A. C., Johnson M. T., Povinelli R. J., ‘Speech recognition using reconstructed phase space features,’ 2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, vol.1, 2003, pp.I-60-3. |
| Povinelli R. J., Roberts F. M., Johnson M. T., Ropella K. M., ‘Are nonlinear ventricular arrhythmia characteristics lost, as signal duration decreases?’ Computers in Cardiology 2002, Volume 29, 2002, pp.221-4. |
| Povinelli R. J., Johnson M. T., Bangura J. F., Demerdash N.A.O., ‘A comparison of phase space reconstruction and spectral coherence approaches for diagnostics of bar and end-ring connector breakage faults in polyphase induction motors using current waveforms,’ Conference Record of the 2002 IEEE Industry Applications Conference, vol. 3, 2002, pp.1541-7. |
| Cinjin Ye, Richard J. Povinelli, and Michael T. Johnson, "Phoneme Classification Using naïve Bayes Classifier in Reconstructed Phase Space", IEEE Digital Signal Processing Workshop 2002, Atlanta, Georgia, October 2002. |
| Patrick Clemins and Michael T. Johnson, "Automatic Speech Recognition and Speaker Identification of Animal Vocalizations", Measuring Behavior 2002, Amsterdam, Netherlands, August 2002. |
| Richard J. Povinelli, Felice M. Roberts, Kristina M. Ropella, Michael T. Johnson, "Are Nonlinear Ventricular Arrhythmia Characteristics Lost, As Signal Duration Decreases?", Computers in Cardiology, Memphis, TN, September 2002. |
| Patrick Clemins, Heather Ewalt and Michael Johnson, "Time-aligned SVD Analysis for Speaker Identification", Proceedings of the International Conference on Acoustics, Speech, and Signal Processing, May 2002. |
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