- About
- Research
- Undergraduate
- Graduate
- News & Events
- People
- Contact Us

- Admissions
- Academics
- Research
- Students
- Alumni & Giving
- Resources
- I AM

- Bioengineering
- Chemical Engineering
- Civil Engineering
- Electrical and Computer Engineering
- Engineering Science
- Environmental Engineering
- Industrial Engineering
- Innovation, Product Design and Entrepreneurship
- Materials Science and Engineering
- Mechanical Engineering
- Mining Engineering
- Nuclear Engineering
- Petroleum Engineering
- Sustainable Engineering

Ph.D. in Electrical Engineering, Northeastern University, 1988

M.S. in Electrical Engineering; Concentration: Computer and Digital Signal Processing, Northeastern University, 1984

Undergraduate in Electrical Engineering; Concentration: Computer Engineering, Northeastern University, 1984

Digital Signal Processing

Filter design

Neural net algorithms with applications to speech analysis and recognition

Spectral Estimation

(1993) 'Beitle-Veltri Memorial Award' for outstanding teaching.

(1990) 'Outstanding Teacher in Electrical Engineering'.

Tantibundhit, C., Boston, J.R., Li, C.C., Durrant, J.D., Shaiman, S., Kovacyk, K., and El-jaroudi, A., 2007, "New signal decompositionmethod based speech enhancement," Signal Processing, vol.87, no.11, pp. 2607-2628.

Yoo, S., Boston, J., Durrant, J., Kovacyk, K., Shaiman, S., El-jaroudi, A., and Li, C.C., 2007, "Speech Signal Modification to Increase Intelligibility in Noisy Environments," Journal of the Acoustical Society of America, vol.122, no.2, pp. 1138-1149.

Tantibundhit, C., Boston, R.J., Li, C.C., Durrant, J.D., Shaiman, S., Kovacyk, K., and El-jaroudi, A., 2006, "Speech Enhancement Using Transient Speech Components," IEEE Int. Conference on Acoustics, Speech and Signal Processing, Toulouse, France.

Tantibundhit, C., Boston, J.R., Li, C.C., and El-jaroudi, A., 2005, "Automatic Speech Decomposition and Speech Codingusing MDCT-based Hidden Markov Chain and Wavelet-Based Hidden Markov Tree Models," IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, pp. 207-210, Mohonk, NY.

Yoo, S., Boston, J.R., Durrant, J.D., Kovacyk, K., Karn, S., Shaiman, S., El-jaroudi, A., and Li, C.C., 2005, "Speech Enhancement based on Transient Speech Information," IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, pp. 62-65, Mohonk, NY.

Yoo, S., Boston, J.R., Durrant, J.D., Kovoacyk, K., Karn, S., Shaiman, S., El-jaroudi, A., and Li, C.C., 2005, "RelativeEnergy and Intelligibility of Transient Speech Information," IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2005), pp. 69-72, Philadelphia, PA.

Boston, J.R., Yoo, S., Durrant, J.D., Kovacyk, K., Karn, S., Li, C.C., and El-jaroudi, A., 2004, "Relative Intelligibility ofDynamically Extracted Transient versus Steady-State Components of Speech," 147th Meeting of the Acoustical Society of America, 2600 (A), New York.

Laura, M., Zheng, Z., and El-jaroudi, A., 2004, "The Application of Blind Source Separation to Feature Decorrelationand Normalization," Rich Transcription Workshop, RT-04, 24.1-5, Palisades, NY.

Yoo, S., Boston, J.R., Durrant, J.D., Kovacyk, K., Karn, S., Shaiman, S., El-jaroudi, A., and Li, C.C., 2004, "Relative Energyand Intelligibility of Transient Speech Components," EUSIPCO-2004, 12th European Signal Processing Conference, pp. 1031-1034, Vienna, Austria.

El-jaroudi, A., and Dognin, P., 2003, "A New Spectral Transformation for Speaker Normalization," Eurospeech, Geneva, Switzerland.

El-jaroudi, A., and Dognin, P., 2003, "Speaker Normalization with the Band Pass Transform," 37th Asilomar Conference on Signals, Systems and Computers, pp. 1894-1899, Pacific Grove, CA.

El-jaroudi, A., and Emresoy, M., 2003, "Iterative Instantaneous Frequency Estimation for Random Signals," in Time frequency signal analysis and processing: a comprehensive reference, B. Boashash, ed., Elsevier, pp. 421-427.

El-jaroudi, A., 2002, "Linear Predictive Coding," in Wiley Encyclopedia of Telecommunications, J. Proakis, ed., John Wiley & Sons.

Dognin, P., El-jaroudi, A., and Billa, J., 2000, "Parameter Optimization for Vocal Tract Length Normalization," IEEE Int. Conf. on Acoustics, Speech and Signal Processing, pp. 1767-1770, Istanbul, Turkey.

El-jaroudi, A., 2000, "Minimum Entropy Time-Frequency Distributions," Tenth IEEE Workshop on Statistical Signal and Array Processing, pp. 603-606.

Shah, S.I., El-jaroudi, A., Loughlin, P., and Chaparro, L.F., 2000, "Signal Synthesis and Positive TFDs," J. of the Franklin Institute, vol.337, no.4, pp. 317-328.

Emresoy, M., and El-jaroudi, A., 1999, "Evolutionary Spectrum Estimation using Positivity Constrained Deconvolution," IEEE Transactions on Signal Processing, vol.47, no.3, pp. 889-893.

Shah, S.I., Chaparro, L.F., and El-jaroudi, A., 1999, "Generalized Transfer Function Estimation Using EvolutionarySpectral Deblurring," IEEE Transaction on Signal Processing, vol.47, no.8, pp. 2335-2339.

1998, "An Algorithm to Determine the Feasibilities and Weights of Two-Layer Perceptronsfor Partitioning and Classification," Pattern Recognition, vol.31, no.11, pp. 1613-1625.

Akgul, T., and El-jaroudi, A., 1998, "Reconstruction of Mixed-Phase Signals from Sum-of-Autotriplecorrelations UsingLeast Squares," IEEE Transactions on Signal Processing, vol.41, no.1, pp. 250-254.

Billa, J., and El-jaroudi, A., 1998, "An Analysis of the Effects of Basilar Membrane Nonlinearities on Noise Suppression," Journal of Acoustical Society of America, vol.103, no.5, pp. 2691-2705.

Emresoy, M., and El-jaroudi, A., 1998, "Evolutionary Spectrum Estimation By Deconvolving Bilinear Time-FrequencyDistributions," SPIE Conf. on Advanced Signal Processing Algorithms, Architectures and Implementations VIII, pp. 152-158, San Diego, CA.

Emresoy, M., and El-jaroudi, A., 1998, "Evolutionary Spectrum Estimation using Positivity Constrained Deconvolution," Int. Symp. on Time-Frequency and Time-Scale Analysis, pp. 669-672, Pittsburgh, PA.

Emresoy, M., and El-jaroudi, A., 1998, "Iterative Instantaneous Frequency Estimation and Adaptive Matched Spectrogram," Signal Processing, vol.64, pp. 157-165.

Shah, S., Chaparro, L., and El-jaroudi, A., 1998, "Generalized Transfer Function Estimation Using Evolutionary SpectralDeblurring," Int. Conf. on Acoustics, Speech, and Signal Processing, pp. 2401-2404, Seattle, WA.

Shah, S., El-jaroudi, A., and Chaparro, L., 1998, "Signal Synthesis and Positive Time-Frequency Distributions," Int. Symp. on Time-Frequency and Time-Scale Analysis, pp. 17-20, Pittsburgh, PA.

Shah, S.I., Chaparro, L.F., El-jaroudi, A., and Furman, J., 1998, "Evolutionary Maximum Entropy and Heart Rate VariabilityAnalysis," Multi Dimensional Systems and Signal Processing, vol.9, no.4, pp. 453-458.

Zavaliagkos, G., McDonough, J., Miller, D., El-jaroudi, A., Billa, J., Richardson, M., Ma, K., Siu, A., and Gish, A., 1998, "The BBN Byblos 1997Large Vocabulary Conversational Speech Recognition System," Int. Conf. on Acoustics, Speech, and Signal Processing, pp. 905-908, Seattle, WA.

Akgul, T., El-jaroudi, A., and Simaan, M., 1997, "Multi-Scale Deconvolution of Sensor Array Signals via Sum-of-Cumulants," IEEE Transactions on Signal Processing, vol.45, no.6, pp. 1656-1659.

Akgul, T., El-jaroudi, A., and Simaan, M., 1997, "Multi-Scale Deconvolution of Sensor Array Signals," Signal Processing, vol.57, no.1, pp. 35-42.

Billa, K., Ma, K., McDonough, J., Zavaliagkos, G., Miller, D., Ross, K., and El-jaroudi, A., 1997, "MultiLingual Speech Recognition:The 1996 Byblos Call Home System," Eurospeech, pp. 363-366, Rhodes, Greece.

Emresoy, M., and El-jaroudi, A., 1997, "Evolutionary Burg Spectral Estimation," Signal Processing Letters, vol.4, no.6, pp. 173-175.

Emresoy, M.K., and El-jaroudi, A., 1997, "Iterative Estimation of Instantaneous Frequency and Adaptive Spectrogram," SPIE, Advanced Algorithms and Architectures for Signal Processing VII, pp. 172-179, San Diego, CA.

Shah, S.I., Loughlin, P., Chaparro, L.F., and El-jaroudi, A., 1997, "Informative Priors for Minimum Cross Entropy Time-Frequency Distributions," Signal Processing Letters, vol.4, no.6, pp. 176-177.

Vasko, R., El-jaroudi, A., and Boston, R., 1997, "Application of HMM Topology Estimation to Repetitive Lifting Data," IEEE Int. Conference on Acoustics, Speech and Signal Processing, pp. 4073-4076, Munich, Germany.

Vasko, R.C., Bruner, D.P., Monahan, J.P., Doman, J., Boston, J.R., El-jaroudi, A., Miewald, J., Buysse, D.J., Reynolds, C.F., and Kupfer, D.J., 1997, "Power Spectral Analysis of EEG in a Multiple-Bedroom, Multiple-Polygraph SleepLaboratory," Int. Journal of Medical Informatics, vol.46, no.3, pp. 175-184.

Billa, J., and El-jaroudi, A., 1996, "A Method of Generating Objective Functions for Probability Estimation," Engineering Applications of Artificial Intelligence, vol.9, no.2, pp. 205-208.

Detka, C., and El-jaroudi, A., 1996, "The Generalized Evolutionary Spectrum," IEEE Transactions on Signal Processing, vol.44, no.11, pp. 2877-2881.

El-jaroudi, A., Redfern, M., Chaparro, L.F., and Furman, J., 1996, "The Application of Time-Frequency Methods to the Analysis of Postural Sway," Proceedings of the IEEE, vol.84, no.9, pp. 1312-1318.

Vasko, R., El-jaroudi, A., and Boston, R., 1996, "An Algorithm to Determine Hidden Markov Model Topology," IEEE Int. Conference on Acoustics, Speech and Signal Processing, pp. 3578-3581, Atlanta, GA.

Detka, C.S., and El-jaroudi, A., 1995, "Variable Frequency Evolutionary Spectrum," IEEE Int. Conference on Acoustics, Speech and Signal Processing, pp. 1553-1556, Detroit, Michigan.

Grumbine, M., Petrus, B., El-jaroudi, A., and Collura, J., 1995, "Discrete All-Pole Modeling Using Higher Order Spectra," IEEE Workshop on Speech Coding for Telecommunications, pp. 55-56, Annapolis, MD.

Kayhan, A.S., El-jaroudi, A., and Chaparro, L.F., 1995, "Data-Adaptive Evolutionary Spectral Estimation," IEEE Transactions on Signal Processing, vol.43, no.1, pp. 204-213.

Petrus, T.B., and El-jaroudi, A., 1995, "Automatic Recognition of Fast and Slow Phases in Nystagmic Eye MovementsUsing a Neural Network," Engineering Applications of Artificial Intelligence, vol.8, no.2, pp. 191-199.

Schumann, T., Redfern, M., Furman, J., El-jaroudi, A., and Chaparro, L.F., 1995, "Time-Frequency Analysis of PosturalSway," Journal of Biomechanics, vol.28, no.5, pp. 603-607.

Akgul, T., El-jaroudi, A., and Simaan, M., 1994, "Deconvolution of Sensor Array Signals Using Time-Scaling," IEEE Int. Conference on Acoustics, Speech and Signal Processing, II 365-368, Adelaide, Australia.

Detka, C.S., and El-jaroudi, A., 1994, "The Chirped Evolutionary Spectrum," IEEE SP Workshop on Statistical Signal & Array Processing, pp. 239-242, Quebec City, Qc, Canada.

Detka, C.S., and El-jaroudi, A., 1994, "The Evolutionary Periodogram: An Iterative Time-Frequency Estimator,," IEEE SP International Symposium on Time-Frequency and Time-Scale Analysis, pp. 17-20, Philadelphia, PA.

Detka, C.S., and El-jaroudi, A., 1994, "The Transitory Evolutionary Spectrum," IEEE Int. Conference on Acoustics, Speech and Signal Processing, IV 289-292, Adelaide, Australia.

Detka, C.S., Loughlin, P., and El-jaroudi, A., 1994, "On Combining Evolutionary Spectral Estimates," IEEE SP Workshop on Statistical Signal & Array Processing, pp. 243-246, Quebec City, Qc, Canada.

El-jaroudi, A., Akgul, T., and Simaan, M., 1994, "Application of Higher-Order Spectra to Multi-Scale Deconvolution ofSensor Array Signals," IEEE Int. Conference on Acoustics, Speech and Signal Processing, IV 413-416, Adelaide, Australia.

Kayhan, A.S., El-jaroudi, A., and Chaparro, L.F., 1994, "The Evolutionary Periodogram for Non-Stationary Signals," IEEE Transactions on Signal Processing, vol.42, no.6, pp. 1527-1536.

Lin, C.C., and El-jaroudi, A., 1994, "A study on the Partitioning Capabilities of Two-Layer Neural Networks," International Conference on Neural Networks, pp. 360-365, Orlando, Florida.

Loughilin, P., Schumann, T., Redfern, M., Furman, J., and Chaparro, L., 1994, "Time-Frequency Analysisof Postural Sway," 28th Asilomar Conference on Signals, Systems, and Computers, pp. 378-382, Pacific Grove, CA.

Shah, S.I., Chaparro, L.F., and El-jaroudi, A., 1994, "Properties of the Evolutionary Maximum Entropy Spectral Estimator," IEEE SP Workshop on Statistical Signal & Array Processing, pp. 263-266, Quebec City, Qc, Canada.

Chaparro, L.F., El-jaroudi, A., and Kayhan, S.A., 1993, "Evolutionary Spectral Estimation on Non-Stationary Signals," in Fundamentals of Discrete-Time Systems, B. Anderson, N. Bose, M. Jamshidi, and M. Mansour, eds., TSI Press, pp. 219-226.

Detka, C.S., El-jaroudi, A., and Chaparro, L.F., 1993, "Relating the Bilinear Distributions and the Evolutionary Spectrum," IEEE Int. Conference on Acoustics, Speech and Signal Processing, IV 496-499, Minneapolis, MN.

Ghiselli-Crippa, T., and El-jaroudi, A., 1993, "A Fast Neural Net Training Algorithm and Its Application to Speech Classification," Journal of Engineering Applications of Artificial Intelligence, vol.6, no.6, pp. 549-557.

Molinari, R., and El-jaroudi, A., 1993, "Complex Decision Boundaries Using Single Layer Neural Nets," Journal of Engineering Applications of Artificial Intelligence, vol.6, no.5, pp. 479-484.

Totarong, P., and El-jaroudi, A., 1993, "Robust High Resolution Direction of Arrival Estimation via Signal EigenvectorDomain," IEEE Journal of Oceanic Engineering, vol.18, no.4, pp. 491-499.

Vasko, R., Boston, J.R., El-jaroudi, A., and Rudy, T.E., 1993, "A Multi-Dimensional Time Series Model of RepetitiveDynamic Lifting," 15th Annual Int. Conf. IEEE Engineering in Medicine and Biology Society, San Diego, CA.

Akgul, T., El-jaroudi, A., and Simaan, M.A., 1992, "A Novel Solution to Multi-Scale Deconvolution of Sensor ArraySignals," Sixth SSAP Workshop on Statistical Signal and Array Processing, pp. 477-480, Victoria, BC.

Chaparro, L.F., and El-jaroudi, A., 1992, "The Development of a Real-Time Signal Processing Laboratory," Annual Conference on Engineering Education, pp. 402-405, Toledo, OH.

Detka, C.S., El-jaroudi, A., and Chaparro, L.F., 1992, "Evolutionary Periodogram and Bilinear Distributions as EvolutionarySpectral Estimators," IEEE ASSP Fifth Digital Signal Processing Workshop, 1.2.1-1.2.2, Starved Rock, IL.

Kayhan, A.S., Chaparro, L.F., and El-jaroudi, A., 1992, "Wold-Cramer Evolutionary Spectral Estimators," IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis, pp. 115-118, Victoria, BC.

Kayhan, A.S., El-jaroudi, A., and Chaparro, L.F., 1992, "Evolutionary Autocorrelation Estimation for Non-StationaryProcesses," 1992 Conference on Information Sciences and Systems, p. 777, Princeton, NJ.

Molinari, R., and El-jaroudi, A., 1992, "Complex Decision Boundaries Using Tree Connected Single Layer Nets," IEEE Midwest Symposium on Circuits and Systems, pp. 883-886, Washington, DC.

Toarong, P., and El-jaroudi, A., 1992, "Robust DOA Estimation of Coherent Sources via Eigenvector Space Analysis," OCEANS 92, Newport, RI.

Totarong, P., and El-jaroudi, A., 1992, "A Novel Approach for Robust High-Resolution DOA Estimation," Sixth SSAP Workshop on Statistical Signal and Array Processing, pp. 366-369, Victoria, BC.

Totarong, P., and El-jaroudi, A., 1992, "DOA Estimation via Eigenvector Domain Harmonic Analysis," IEEE Midwest Symposium on Circuits and Systems, pp. 966-969, Washington, DC.

Akgul, T., and El-jaroudi, A., 1991, "Discrete All-Pole Modeling using Higher Order Spectra," IEEE Int. Conference on Acoustics, Speech and Signal Processing, pp. 3493-3496, Toronto, Ont..

El-jaroudi, A., and Makhoul, J., 1991, "Discrete All-Pole Modeling," IEEE Transactions on Signal Processing, vol.39, no.2, pp. 411-423.

Ghiselli-Crippa, T., and El-jaroudi, A., 1991, "A Fast Neural Net Training Algorithm and Its Application to Voiced-Unvoiced-Silence Classification of Speech," IEEE Int. Conference on Acoustics, Speech and Signal Processing, pp. 441-444, Toronto, Ont..

Ghiselli-Crippa, T., and El-jaroudi, A., 1991, "Voiced-Unvoiced-Silence Classification of Speech Using Neural Nets," Int. Joint Conference on Neural Networks, II 851-856, Seattle, WA.

Kayhan, A.S., El-jaroudi, A., and Chaparro, L.F., 1991, "Minimum-Variance Evolutionary Spectral Estimation of NonstationarySignals," IEEE Int. Conference on Acoustics, Speech and Signal Processing, pp. 3165-3168, Toronto, Ont..

Makhoul, J., and El-jaroudi, A., 1991, "A Geometric Characterization of Positive-Definite Sequences and of the FourierTransform," IEEE Transactions on Signal Processing, vol.39, no.8, pp. 1903-1906.

Makhoul, J., El-jaroudi, A., and Schwartz, R., 1991, "Classification Capabilities of Two-Layer Neural Networks," IEEE Transactions on Signal Processing, vol.39, no.6, pp. 1435-1439.

El-jaroudi, A., and Makhoul, J., 1990, "A New Error Criterion for Posterior Probability Estimation with Neural Nets," Int. Joint Conference on Neural Networks, III 185-192, San Diego, CA.

Makhoul, J., and El-jaroudi, A., 1990, "Posterior Probability Estimation with Neural Nets," Neural Nets for Computing, Snowbird, UT.

El-jaroudi, A., 1989, "Discrete Pole-Zero Modeling and Application to Speech Analysis," Speech Research Symposium VIII, Stillwater, OK.

El-jaroudi, A., 1989, "Speech Analysis Using Discrete Spectral Modeling," IEEE Midwest Symposium on Circuits and Systems, pp. 85-88, Urbana, IL.

El-jaroudi, A., and Makhoul, J., 1989, "Discrete Pole-Zero Modeling and Applications," IEEE Int. Conference on Acoustics, Speech and Signal Processing, pp. 2162-2165, Glasgow, Scotland.

Makhoul, J., El-jaroudi, A., and Schwartz, R., 1989, "Formation of Disconnected Decision Regions with a Single Hidden Layer," IEEE International Conference on Neural Networks, I 455-460, Washington, DC.

Makhoul, J., Schwartz, R., and El-jaroudi, A., 1989, "Classification Capabilities of Two-Layer Neural Nets," IEEE Int. Conference on Acoustics, Speech and Signal Processing, pp. 635-638, Glasgow, Scotland.

Makhoul, J., and El-jaroudi, A., 1988, "Volume of Finite Autocorrelations," IEEE ASSP Workshop on Spectral Estimation, pp. 283-288, Minneapolis, MN.

El-jaroudi, A., and Makhoul, J., 1987, "Discrete All-Pole Modeling for Voiced Speech," IEEE Int. Conference on Acoustics, Speech and Signal Processing, pp. 320-323, Dallas, TX.

El-jaroudi, A., and Makhoul, J., 1986, "All-Pole Modeling for Discrete Spectra," IEEE ASSP Workshop on Spectral Estimation and Modeling, pp. 29-32, Boston, MA.

El-jaroudi, A., and Makhoul, J., 1986, "Improved All-Pole Modeling for Harmonic Spectra," IEEE ASSP Digital Signal Processing Workshop, Chatham, MA.

Makhoul, J., and El-jaroudi, A., 1986, "Time-Scale Modification in Medium to Low Rate Speech Coding," IEEE Int. Conference on Acoustics, Speech and Signal Processing, pp. 1705-1709, Tokyo, Japan.

**Real-Time Signal
Processing Laboratory **

An undergraduate teaching laboratory created using NSF and School of Engineering funds. This lab services many courses in signal processing including: Signals and Systems, Digital Filter Design, and Bioengineering Signals and Systems. This lab includes real-time signal processing hardware for data-acquisition, processing, and playback. It also includes software simulation packages. to The goal of the laboratory is to improve the design and problem solving experience in signal processing for Junior and Senior students in electrical engineering. Examples of Senior Design Projects which have utilized the lab include: Real-Time Spectral Analysis, Speech Recognition, Bearing Estimation.

Associate Editor for IEEE Transactions on Speech and Audio Processing, 1992-1995.