News Articles and Press Releases

"Decoding Calls of the Wild", Milwaukee Journal Sentinal, part of feature series on Groudbreaking Thinkers in Wisconsin, October 2008. (pdf 48kB)

"Say What?", cover article on Dr. Dolittle Project, Weekly Reader Science, Spring 2007. (pdf 877kB)

"Animal Talk", by Elena Cabral, Scholastic News Edition 5/6, December 18, 2006. (pdf 238kB)

"Animal Speech Project Aims to Decode Critter Communication", by Maryann Mott, National Geographic Online, http://news.nationalgeographic.com/news/2006/09/060926-dolittle-project.html , September 2006.

"Parsing the Puffin's Patois", by Maryann Mott, Wired News Online, http://www.wired.com/news/politics/lifescience/0,71439-0.html?tw=wn_index_19 , July 2006 .

"What Jumbo tells Dumbo", by Alex Antunes, Computing in Science and Engineering , published by the IEEE Computer Society, (pdf 150kB)

Article about Dr. Johnson in Marquette Engineering Winter 2001 (pdf 48kB)

Article on our NSF Research Experiences for Undergraduates (REU) grant in Marquette Engineering Winter 2003 (pdf 69kB)

Article on the Dr. Dolittle Project in the Marquette Alumni Magazine Fall 2003 (pdf 1,099kB)

Publications associated with the Speech and Signal Processing Lab

2008

• Yao Ren, Michael T. Johnson, Jidong Tao, "Perceptually motivated wavelet packet transform for bioacoustic signal enhancement," Journal of the Acoustical Society of America, in press. (pdf 694kB)
• Jidong Tao, Michael T. Johnson, Tomasz Osiejuk, "Acoustic model adaptation for ortolan bunting (Emberiza hortulana L.) song type classification," Journal of the Acoustical Society of America, vol. 123, no. 3, March 2008, pp 1582-1590. (pdf 694kB)
• Kuntoro Adi, Kristine E. Sonstrom, Peter M. Scheifele, Michael T. Johnson, "Unsupervised Validity Measures for Vocalization Clustering," International Conference on Acoustics Speech and Signal Processing 2008 (ICASSP08), Las Vegas, Nevade, April 2008. (pdf 107kB)
• Yao Ren, Michael T. Johnson, "An Improved SNR Estimator for Speech Enhancement," International Conference on Acoustics Speech and Signal Processing 2008 (ICASSP08), Las Vegas, Nevade, April 2008. (pdf 254kB)
  

  Student Theses/Dissertations

• Adi, Kuntoro, "Hidden Markov Model based animal acoustic censusing: Learning from speech processing technology", Doctoral Dissertation, Marquette University, May 2008. (pdf 1024kB)
• Slavens, Zachary, "Generalized Interpolation applied to MR Image Magnification and Gradient Nonlinearity Correction", M.S. Thesis, Marquette University, May 2008. (pdf 2903kB)

2007

• Michael T. Johnson, Xiaolong Yuan, Yao Ren, "Speech signal enhancement through adaptive wavelet thresholding," Speech Communication, vol. 49, No. 2, February 2007, pp 123-133. (pdf 387kB)
• Xi Li, Jidong Tao, Michael T. Johnson, Joseph Soltis, Anne Savage, Kirsten M. Leong, John D. Newman, "Stress and Emotion Classification using Jitter and Shimmer Features," International Conference on Acoustics Speech and Signal Processing 2007 (ICASSP07), Honolulu, Hawii, April 2007. (pdf 1586kB)
  

  Student Theses/Dissertations

• Li, Xi, "SPEech Feature Toolbox (SPEFT) Design and Emotional Speech Feature Extraction", M.S. Thesis, Marquette University, May 2007. (pdf 1412kB)
• Ricke, Anthony, "Automatic frame length, frame overlap, and Hidden Markov Model topology for automatic speech recognition of animal vocalizations", M.S. Thesis, Marquette University, December 2006. (pdf 1412kB)

2006

• Patrick Clemins and Michael T. Johnson, "Generalized perceptual linear prediction (gPLP) features for animal vocalization analysis," Journal of the Acoustical Society of America, Vol. 120, No. 1, July 2006, pp 527-534. (pdf 236kB)
• 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, Vol. 54, No. 6, June 2006, pp 2178-2186. (pdf 538kB)
• Patrick Clemins, Marek B. Trawicki, Kuntoro Adi, Jidong Tau, and Michael T. Johnson, "Generalized Perceptual Features for Vocalization Analysis across Multiple Species," International Conference on Acoustics, Speech and Signal Processing (ICASSP) 2006, Toulouse, France, May 2006. (pdf 98kB)
• Kuntoro Adi, Michael T. Johnson, "Cepstral moment normalization for robust individual identification of ortolan bunting (emberiza hortulana L)," presented at the Spring 2006 meetings of the Acoustical Society of America, May 2006, Providence, RI. (pdf 190kB)
  

  Student Theses/Dissertations

2005

• Michael T. Johnson and Richard J. Povinelli, "Generalized phase space projection for nonlinear noise reduction", Physica D, No. 201, 2005, pp306-317. (pdf 119kB)
• Kevin M. Indrebo, Richard J. Povinelli, Michael T. Johnson, "Sub-banded Reconstructed Phase Spaces for Speech Recognition", Speech Communication, special issue on non-linear and non-conventional speech processing, Vol. 48, pp 760-774. (pdf 284kB)
• Michael T. Johnson, "Capacity and Complexity of HMM Duration Modeling Techniques", IEEE Signal Processing letters, Volume 12, No. 5, May 2005, pp 407-410. (pdf 244kB)
• 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, Vol. 117, No. 2, Feb. 2005, pp 956-963. (pdf 565kB)
• Michael T. Johnson, Richard J. Povinelli, Andrew Lindgren, Jinjin Ye, Xiaolin Liu, 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. (pdf 640kB)
• Anthony D. Ricke, Richard J. Povinelli, Michael T. Johnson, "Segmenting Heart Sound Signals," Computers in Cardiology, Leon, France, September 25-28, 2005, in press.
• Marek Trawicki and Michael T. Johnson, "Automatic Song-Type Clasification and Speaker Identification of Norwegian Ortolan Bunting (Emberiza Hortulana)", IEEE International Conference on Machine Learning in Signal Processing (MLSP), Mystic Connecticut, September 2005, in press. (pdf 412kB)
• Patrick J. Clemins and Michael T. Johnson, "Unsupervised Classification of Beluga Whale Vocalizations", Spring 2005 Meetings of the Acoustical Society of America, Vancouver, May 2005. (Abstract pdf 69kB)
• Kevin M. Indrebo, Richard J. Povinelli, and Michael T. Johnson, "Third-order Moments of Filtered Speech Signals for Robust Speech Recognition", International Conference on Non-linear Speech Processing (NOLISP) 2005, Barcelon, Spain, April 2005, pp 151-157. (pdf 128kB)
  

  Student Theses/Dissertations

• Clemins, P. J., "Automatic Speaker Identification and Classification of Animal Vocalizations", Doctoral Dissertation, Marquette University, May 2005. (pdf 1338kB)

2004

• 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, in press.
• Andrew Lindgren, Michael T. Johnson, and Richard J. Povinelli, Joint Frequency Domain and Reconstructed Phase Space Features for Speech Recognition”, International Conference on Acoustics, Speech and Signal Processing 2004 (ICASSP04), Montreal (pdf 565kB)
• Richard J. Povinelli, Michael T. Johnson, Andrew C. Lindgren, and Jinjin Ye, "Time Series Classification using Gaussian Mixture Models of Reconstructed Phase Spaces", IEEE Transactions on Knowledge and Data Engineering, in press. (pdf 276kB)
• Kelly Stonger and Michael T. Johnson, "Optimal Calibration of PET Crystal Position Maps using Gaussian Mixture Models", IEEE Transactions on Nuclear Science, in press.
• Heather E. Ewalt and Michael T. Johnson, "Combining Multi-source Wiener Filtering with Parallel Beamformers to Reduce Noise from Interfering Talkers", International Conference on Signal Processing (ICSP) 2004, Beijing, August 2004 (pdf 362kB)
• Kevin M. Indrebo, Richard J. Povinelli, and Michael T. Johnson, "A comparison of reconstructed phase spaces and cepstral coefficients for multi-band phoneme classification", International Conference on Signal Processing (ICSP) 2004, Beijing, August 2004 (pdf 262kB)
• Patrick Clemins and Michael T. Johnson, "Generalized perceptual features for animal vocalization classification", Spring 2004 Meetings of the Acoustical Society of America, New York, May 2004 (pdf 63kB)
  

  Student Theses/Dissertations

• Jinjin Ye, "Speech Recognition Using Time Domain Features from Phase Space Reconstructions", M.S. Thesis, Marquette University, May 2004. (pdf 537kB)

2003

• Mike Zimmerman, Richard J. Povinelli, Michael T. Johnson, and Kris Ropella, "A Reconstructed Phase Space Approach for Distinguishing Ischemic from Non-Ischemic ST Changes using Holter ECG Data", Computers in Cardiology, Thessolonica, Greece, September, 2003. (pdf 223kB)
• Patrick Clemins and Michael T. Johnson, "Automatic Classification of African Elephant (Loxodonta africana) Follicular and Luteal Rumbles", 1st International Conference on Acoustic Communication by Animals, Baltimore, Maryland, July 2003 (pdf 48kB)
• Patrick Clemins and Michael T. Johnson, "Automatic Type Classification and Speaker Identification of African Elephant (Loxodonta Africana) Vocalizations", Spring 2003 Meetings of the Acoustical Society of America, Nashville, May 2003 (Abstract pdf 14kB)
• Heather E. Ewalt and Michael T. Johnson, "Multiple Speech Signal Enhancement using a Microphone Array", Spring 2003 Meetings of the Acoustical Society of America, Nashville, May 2003 (Abstract pdf 13kB)
• Kevin M. Indrebo, Richard J. Povinelli, and Michael T. Johnson, "A Combined Sub-band and Reconstructed Phase Space Approach to Phoneme Classification", ISCA tutorial and research workshop on non-linear speech processing (NOLISP) 2003, Le Croisic, France, May 2003 (pdf 150kB)
• Jinjin Ye, Michael T. Johnson, and Richard J. Povinelli, "Study of attractor variation in the reconstructed phase space of speech signals",ISCA tutorial and research workshop on non-linear speech processing (NOLISP) 2003, Le Croisic, France, May 2003 (pdf 170kB)
• Jinjin Ye, Michael T. Johnson, and Richard J. Povinelli "Phoneme classification over reconstructed phase space using principal component analysis", ISCA tutorial and research workshop on non-linear speech processing (NOLISP) 2003, Le Croisic, France, May 2003 (pdf 155kB)
• Xiaolin Liu, Richard J. Povinelli, and Michael T. Johnson, "Vowel classification by global dynamic modeling", ISCA tutorial and research workshop on non-linear speech processing (NOLISP) 2003, Le Croisic, France, May 2003 (pdf 357kB)
• Patrick Clemins and Michael T. Johnson, "Application of Speech Recognition to African Elephant (Loxodonta Africana) Vocalizations", International Conference on Acoustics, Speech and Signal Processing 2003 (ICASSP03), Hong Kong, April 2003 (pdf 176kB)
• Michael T. Johnson, Andrew C. Lindgren, Richard J. Povinelli, and Xiaolong Yuan, "Performance of Nonlinear Speech Enhancement using Phase Space Reconstruction", International Conference on Acoustics, Speech and Signal Processing 2003 (ICASSP03), Hong Kong, April 2003 (pdf 177kB)
• Andrew C. Lindgren, Michael T. Johnson, and Richard J. Povinelli, "Speech Recognition using Reconstructed Phase Space Features", International Conference on Acoustics, Speech and Signal Processing 2003 (ICASSP03), Hong Kong, April 2003 (pdf 204kB)
• 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. (pdf 448kB)
  

  Student Theses/Dissertations

• Franck Hounkpevi, "Triphone Creation Through Rule-based Trajectory Interpolation for Continuous Speech Recognition", M.S. Thesis, Marquette University, May 2003. (pdf 778kB)
• Xiaolong Yuan, "Auditory Model-Based Bionic Wavelet Transform for Speech Enhancement", M.S. Thesis, Marquette University, May 2003. (pdf 652kB)
• Andrew Lindgren, "Speech Recognition using Features extracted from Phase Space Reconstructions", M.S. Thesis, Marquette University, May 2003. (pdf 1,129kB)

2002

• Xiaolin Liu, Richard Povinelli, and Michael T. Johnson, "Detecting Determinism in Speech Phonemes", IEEE Digital Signal Processing Workshop 2002, Atlanta, Georgia, October 2002. (pdf 310kB)
• Jinjin 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. (pdf 157kB)
• Patrick Clemins and Michael T. Johnson, "Automatic Speech Recognition and Speaker Identification of Animal Vocalizations", Measuring Behavior 2002, Amsterdam, Netherlands, August 2002. (pdf 66kB)
• Richard J. Povinelli, Felice M. Roberts, Kristina M. Ropella, Michael T. Johnson, "Are Nonlinear Ventricular Arrhythmia Characteristics Lost, As Signal Duration Decreases?", to be presented at Computers in Cardiology, Memphis, TN, September 2002. (pdf 249kB)
• Richard J. Povinelli, Michael T. Johnson, Nabeel A.O. Demerdash, John F. Bangura, "A Comparison of Phase Space Reconstruction and Spectral Coherence Approaches for Diagnostics of Bar and End-Ring Connector Breakage and Eccentricity Faults in Polyphase Induction Motors using Motor Design Particulars", to be presented at IEEE Industry Applications Society meetings 2002, Pittsburgh, PA, October 2002. (pdf 670kB)
• 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 (pdf 139kB)
  

  Student Theses/Dissertations

• Heather Ewalt, "Speech Signal Enhancement Using a Microphone Array", M.S. Thesis, Marquette University, December 2002. (pdf 1,537kB)

2001

• Michael T. Johnson and Leah H. Jamieson, "Temporal Features for Broadcast News Segmentation", ISCA Workshop on Prosody in Speech Understanding and Recognition, October 2001 (pdf 186kB)

2000

Student Theses/Dissertations

• Michael T. Johnson, "Incorporating Prosodic Information and Language Structure into Speech Recognition Systems", PhD Dissertation, Purdue University School of Electrical and Computer Engineering, August 2000. (pdf 1,129kB)
• Troy L. Mack, "Formant Tracking of Noise-Corrupted Speech Signals Based on Auditory Modeling" (Dissertation), 2000.
• Felice M. Roberts, "Generation and Evaluation of Windows for Use in Digital Filter Design" (Thesis), 2000.
• Jian Sun, "Improved Chebyshev Design of Linear-Phase Finite-Impulse-Response Digital Filters" (Thesis), 2000.

Earlier than 2000

• Michael T. Johnson and Mary P. Harper, "Near Minimal Weighted Word Graphs for Post-processing Speech", 1999 International Workshop on Automatic speech Recognition and Understanding, December 1999. (pdf 50kB)
• M.P. Harper, M.T. Johnson, L.H. Jamieson, S.A. Hockema, and C.M. White, "Interfacing a CDG Parser with an HMM Word Recognizer Using Word Graphs", Proceedings of the International Conference on Acoustics, Speech, and Signal Processing, March 1999, pp 733-736. (pdf 110kB)
• A.M. Surprenant, S.L. Hura, M.P. Harper, L.H. Jamieson, G.Long, S.M. Thede, A. Rout, T.H. Hsueh, S.A. Hockema, M.T. Johnson, P. Srinivasan, and C.M. White, "Familiarity and Pronouncibility of Nouns and Names", Behavior Research, Methods, Instruments, & Computers, Vol. 31, Nov. 1999, pp. 638-649.
• Anne Smith, Michael Johnson, Clare McGillem, and Lisa Goffman "On the Assessment of Stability and Patterning of Speech Movements", Journal of Speech, Language, and Hearing Research, Vol. 43, 2000, pp 277-286. (pdf 1,240kB)
• Michael T. Johnson, Leah H. Jamieson, and Mary P. Harper "Interfacing Acoustic Models with Natural Language Processing Systems", Proceedings of the International Conference on Spoken Language Processing, December 1998, pp 2419-2422. (pdf 51kB)
• A.M. Supranant, S.L. Hura, M.P. Harper, L.H. Jamieson, G. Long, S.M. Thede, A. Rout, T.H. Hsueh, S.A. Hockema, M.T. Johnson, J.B. Laflen, P. Srinivasa, and C.M. White, "Familiarity and Pronouncibility of Nouns and Names: The Purdue Proper Name Database", The 16th International Congress on Acoustics and the Acoustical Society of America, June, 1998.
• Michael T. Johnson, "An Adaptive Texture Model Based on Markov Random Fields", Masters Thesis, University of Texas at San Antonio, August 1994.
• Michael Johnson and Mita Desai, "An Adaptive Approach for Texture Modelling", Proceedings of the International Conference on Image Processing, November 1994. (pdf 287kB)
• Harold Longbotham, Michael Johnson, Jack Harris, and Redouan Rouzky, "The FatBear: a nonarithmetic pico filter", Proceedings of the SPIE, July 1993. (Scanned pdf 2,820kB)
• H. Singh, R. H. Brown, D. S. Naidu, and J. A. Heinen, "Robust Stability Bounds of Singularly Perturbed Feedback Systems," Proceedings of the AIAA Guidance. Navigation, and Control Conference, Portland, Oregon, pp. 2214-2219, August 9-11, 1999.
• E. V. Houndegla and J. A. Heinen, "On the Design of a Generalized Blind Deconvolution Technique," Proceedings of the TASTED International Conference on Signal and Image Processing, Las Vegas, Nevada, pp. 104-108, October 28-31, 1998.
• E. V. Houndegla and J. A. Heinen, "Speech Enhancement Using a Wavelet/Cumulant-Based Algorithm," Proceedings of the lASTED International Conference on Applied Modelling and Simulation, Honolulu, Hawaii, pp. 425-431, August 12-14, 1998.
• B. V. Houndegla and J. A. Heinen, "Blind Reconstruction Using Higher-Order Statistics and Low-Rank Modeling," Proceedings of the LASTED International Conference on Modelling and Simulation, Pittsburgh, Pennsylvania, pp. 112-117, May 13-16, 1998.
• J. A. Heinen and R. 1. Niederjohn, "Comments on ‘Inversion of the VanderMonde Matrix," IEEE Signal Processing Letters, Vol. 4, No. 4, p. 115, April, 1997.
• L. A. Heinen and R. J. Niederjohn, "Signal Processing," Chapter 4, The Industrial Electronics Handbook (Ed.: J. D. Irwin), CRC Press and IEEE Press, Boca Raton, Florida, pp. 73-94, 1997.
• R. J. Niederjohn and J. A. Heinen, "Understanding Speech Corrupted by Noise," Proceedings of the IEEE International Conference on Industrial Technology, Shanghai, China, pp. 1-5, December 2-6, 1996.
• S. M. McOlash, R. J. Niederjohn, and J. A. Heinen, "A Spectral Subtraction Method for the Enhancement of Speech Corrupted by Non-White, Non-Stationary Noise," Proceedings of the 1995 IEEE 21st International Conference on Industrial Electronics. Control and Instrumentation, Orlando, Florida, pp. 872-877, November 6-10, 1995.
• P. S. Carpenter, R. H. Brown, J. A. Heinen, and S. C. Schneider, "On Algorithms for Velocity Estimation Using Discrete Position Encoders," Proceedings of the 1995 IEEE 21st International Conference on Industrial Electronics. Control and Instrumentation, Orlando, Florida, pp. 844-849, November 6-10, 1995.
• R. J. Niederjohn and J. A. Heinen, "Speech Intelligibility Enhancement in High Levels of Wideband Noise," 1994-95 Annual Review of Communications, Vol. XLVIII, pp. 903-912, May, 1995.
• M. V. Chan, J. A. Heinen, and R. J. Niederjohn, "Formulas for the Impulse Response of a Digital Filter with an Arbitrary Piecewise-Linear Frequency Response," IEEE Transactions on Signal Processing, Vol. 43, No. 1, pp. 308-310, January, 1995.
• Robert J.Conway, "Feature Based Speech Intelligibility Enhancement in High Noise Levels" (Dissertation), 1994.
• L. I. Witzke, R. J. Niederjohn, J. A. Heinen, and M. G. Sommerville, "Speech Synthesis Based on Feature Extraction to Enhance Noise-Corrupted Speech," Proceedings of the 20th International Conference on Industrial Electronics, Control and Instrumentation, Bologna, Italy, pp. 1946-1951, September 5-9, 1994.
• M. V. Chan, X. Feng, J. A. Heinen, and R. I. Niederjohn, "Classification of Speech Accents with Neural Networks," Proceedings of the 1994 IEEE International Conference on Neural Networks-IEEE World Congress on Computational Intelligence, Orlando, Florida, Vol. VII, pp. 4483-4486, June 27-29, 1994.
• M. G. Sommerville, D. E. Chevalier, and L. I. Witzke (Faculty Advisors: R. I. Niederjohn, J. A. Heinen, and A. C. Moeller), "Improving the Intelligibility of Noise Corrupted Speech Using a Speech Synthesizer," Proceedings Eighth National Conference on Undergraduate Research, Kalamazoo, Michigan, Vol. II, pp. 606-610, April 14-16, 1994.
• S. A. Dimino, R. J. Niederjohn, and J. A. Heinen, "Estimating the Energy Contour of Noise corrupted Speech Signals by Autocorrelation Extrapolation," Proceedings of the IEEE International Industrial Electronics. Control and Instrumentation, Lahaina, Maui, Hawaii, pp. 2015-2018, November 15-19, 1993.
• R. J. Niederjohn and J. A. Heinen, "The Enhancement of Speech Intelligibility in High Noise Levels," Proceedings of the Milwaukee Conference on Biomedical Engineering and Biomathematics, Milwaukee, Wisconsin, pp. 17-18, May 3, 1993.
• R. J. Niederjohn, T. J. Svoren, and 1. A. Heinen, "Intelligibility Enhancement of Noise-corrupted Speech Based on Formant Tracking Involving Prefiltering," Proceedings of the 1992 International Conference on Industrial Electronics. Control. Instrumentation, and Automation, San Diego, Cali­fornia, pp. 1336-1341, November 9-13, 1992.
• M. G. Mulligan, R. H. Brown, and J. A. Heinen, "Using MATLAB in a Linear Systems Analysis Course," Proceedings of the 1992 North Midwest Section American Society for Engineering Education 54th Annual Meeting, Milwaukee, Wisconsin, pp.6.5.1-6.5.6, October 8-10, 1992.
• D. J. Sebald, R. J. Niederjohn, F. H. Wu, and K. Ganesan "Talk-through for a Telephone Voice Recognition System," Proceedings of the 1992 First Midwest Electro-technology Conference, Ames, Iowa, pp. 105-108, April 10-11, 1992.
• M. V. Chan, J. A. Heinen, and R. 1. Niederjohn, "Design of FIR Digital Filters with Arbitrary Shapes," Proceedings of the 1992 First Midwest Electro-technology Conference, Ames, Iowa, pp. 48-51, April 10-11, 1992
  

  Student Theses/Dissertations

• Egide A.V. Houndegla, "A New Technique for Blind Reconstruction of Stochastic Processes with Applications to Speech Enhancement" (Dissertation), 1999.
• Mike V. Chan, "Feature-Based Speech Enhancement Techniques Based on Spectral Subtraction and Wiener Filtering" (Dissertation), 1999.
• M. Borahan Turner, "A Fuzzy Syntactic Approach to Fault Diagnostics by Analysis of Time Sampled Signals" (Dissertation), 1998.
• Everton St.P. Walters, "Design of Efficient FIR Digital Filters Using Genetic Algorithms" (Thesis), 1998.
• Lane K. Branson, "The Application of Moment and Cumulant Spectra to Formant Tracking of Speech Embedded in Noise" (Dissertation), 1997.
• Richard I. Santiago, "A Noise Robust Method for Detection of Endpoints of Speech Utterances" (Thesis), 1997.
• Scott M. McOlash, "A Spectral Subtraction Method for the Enhancement of Speech Corrupted by Non-White, Non-Stationary Noise" (Thesis), 1997.
• Egide V. Houndegla, "A New Method for Designing FIR Digital Filters with Low Coefficient Sensitivity" (Thesis), 1995.
• Steven R. Wedan, "A Time-Warping Digital FIR Filter for Nuclear Magnetic Resonance Echoes Collected with Time-Varying Readout Gradients" (Thesis), 1993.
• Scott D. Otterson, "Transient Reduction for Digital Wall Filters in Doppler Ultrasound" (Thesis), 1993.
• Karen J. Leaf Lensmire, "The Effects of Transmission Source Speed and Design on Emission Image Quality Using Local Statistical Noise Estimation" (Thesis), 1993.
• Ian F. Reeve, "Identification of Pipelining Channels in Parallel Digital Signal Processor Systems" (Thesis), 1993.
• Steven A. Dimino, "Evaluation of Methods for Approximating the Short-Time Energy Contour of Speech in Noise Based on Intelligibility Tess" (Thesis), 1992.
• Mike V. Chan, "New Design Formulas for FIR Filters with Arbitrary Shapes" (Thesis), 1992.
• Daniel J. Sebald, "Talk-through for a Telephone Voice Recognition Demonstration System" (Thesis), 1992. Thomas I. Svoren, "Formant Tracking to the Intelligibility of Noise Corrupted Speech" (Thesis), 1992.
• Teresa M. Sippel, "Speech Intelligibility Testing Using Subjective and Objective Methods" (Thesis), 1992.

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