Contact:     mscordilis@gmail.com

Expertise

• Electrical and Computer Engineering
• Speech and Speaker Recognition
• Natural Language Processing and Large Language Models
• Emotional and expressive speech analysis and synthesis; text-to-speech synthesis
• Signal and Image Processing
• Acoustic, Psychoacoustics, Audio and Speech processing, Coding and Enhancement
• AI and Machine Learning
• Biometrics, Watermarking & Security
• Electrical injury and damages

Experience

• Expert witness
• Expert services in patent analysis, evaluation and infringment
• Consultation in electrical and computer engineering design and product evaluation

Education

Year	University	Degree
1990	Clemson University	Ph.D. in Engineering
1986	Clemson University	M.S. in Electrical Engineering
1983	Royal Melbourne Institute of Technology	Bachelor of Engineering in Communication Engineering

Consulting Cases (supported parties are in bold)

Court Case Support – Deposition Experience

• 2023: Client: Law firm of Greenberg Traurig, Expert Deposition in Roku v. Universal Electronics, Case No. IPR2022-01289. Subject: Protocols for voice-enabled smart remote-control devices, speech recognition engines.
• 2023: Client: Law firm of Perkins Coie, Expert Deposition in MZ Audio Sciences, v. Sony and Verance, Case No. IPR2022-01544. Subject: Audio watermarking
• 2023: Client: Law firm of Greenberg Traurig, Expert Deposition in Roku v. Universal Electronics, Case No. IPR2022-00943. Subject: Speech recognition and audio signal conditioning for voice-enabled smart remote-control devices
• 2022: Client: Law firm of Arnold & Porter, Expert Deposition in Jawbone Innovations v. Samsung, Case No. NO. 2:21-CV-0186-JRG-RSP. Subject: Microphone arrays for noise suppression in headset and cellular phone devices
• 2021: Client: Law firm of Greenspoon Marder,Expert Deposition in Nico Goodman v. Ningbo Litesun Electric Co., Ltd. Subject: Physical injuries caused by electrocution

Patents

Patent Number	Date Issued	Title
7,079,633 B2	07/18/2006	Coding a masked data channel in a radio signal
6,996,521	02/07/2006	Auxiliary channel masking in an audio signal

Publications (peer-reviewed)

1. Iliev, A.I. and Scordilis, M.S., “Spoken Emotion Recognition using Glottal Symmetry,” EURASIP Journal on Advances in Signal Processing – Special Issue on Emotion and Mental State Recognition from Speech, 2012
2. Nocito, C.D., Scordilis, M.S., “Monitoring jitter and packet loss in VoIP networks using speech quality features,” to appear in the Proceedings of the 8th Annual IEEE Consumer Communications and Networking Conference (CCNC2011), January 9-12, 2011, Las Vegas, NV
3. Jin W., Liu, X., Scordilis, M.S., Han L., “Speech Enhancement Using Harmonic Emphasis and Adaptive Comb Filtering,” IEEE Transactions on Audio, Speech and Language Processing, Volume 18 (2), Feb. 2010, pp. 356 – 368
4. Scordilis, M.S., Iliev, A.I., Papa, J.P., Falcão, A.X., “Spoken emotion recognition through optimum-path forest classification using glottal features,” Journal of Computer Speech and Language – Special Issue on Emergent Artificial Intelligence Approaches for Pattern Recognition in Speech and Language Processing, 24 (2010) 445–460
5. He, X., Scordilis, M.S., Psychoacoustic Music Analysis Based on the Discrete Wavelet Packet Transform,” Research Letters in Signal Processing, Volume 2008, Article ID 346767, 5 pages
6. He, X., Scordilis, M.S., “”Efficiently Synchronized Spread Spectrum Audio Watermarking,” to appear in Research Letters in Signal Processing, Volume 2008, Article ID 251868, 5 pages
7. Zhang, Y., Scordilis, M.S., “Effective Online Adaptation of Gaussian Mixture Models and its Application to Speech Classification,” Pattern Recognition Letters, (Addendum to the Special Issue on Advances in Pattern Recognition for Speech and Audio Processing), 2008, vol. 29, pp. 735-744
8. Zhang, Y., Scordilis, M.S., “Online Acoustic and Pronunciation Adaptation Techniques in Automatic Speech Recognition,” in Sorokin, V.N. (ed.), Speech Communication at the Leading Edge, ISBN 1-60021-786-0, Nova Science Publishers, 2008
9. Iliev, I.A., Scordilis, M.S., “Emotion Recognition in Speech using Inter-Sentence Glottal Statistics,” Proceedings of the 15^th International Conference on systems, Signals and Image Processing, IWSSIP 2008, Bratislava, Slovakia, June 25-28, 2008, pp. 465-468
10. Iliev, I.A., Zhang, Y., Scordilis, M.S., “Spoken Emotion Classification Using ToBI Features and GMM,” Proceedings of the 14th International Workshop on Signals and Image Processing 2007 and the 6th EURASIP Conference focused on Speech and Image Processing, Multimedia Communications and Services, IWSSIP 2007, Maribor, Slovenia, June 27-30, 2007, pp. 495-498
11. Scordilis, M.S., He, X., “Spread Spectrum for Digital Audio Watermarking,” in Cvejic, N. and Seppanen, T. (eds.), Digital Audio Watermarking Techniques and Technologies: Applications and Benchmarks,” ISBN 978-1-59904-513-9, Information Science Reference, Hershey, PA, 2007, pp. 11-49
12. Jin W., Scordilis, M.S., “Speech Enhancement by Residual Domain Constrained Optimization,” Journal of Speech Communication, Vol. 8 (10), October 2006, pp.1349-1364
13. He, X., Scordilis, M.S., “A Psychoacoustic Model Based on the Discrete Wavelet Packet Transform,” Journal of the Franklin Institute, Volume 343, Issue 7, November 2006, pp. 738-755
14. Abdou, S., Scordilis, M.S., “Beam Search Pruning in Speech Recognition Using a Posterior Probability-Based Confidence Measure,” Journal of Speech Communication, Vol. 423-4, 2004, pp. 409-428, (University of Miami, College of Engineering 2005 Research Paper Award Finalist for Eliahu I. Jury Award for Excellence in Research, November 2005)
15. Jin, W., Scordilis, M.S., “Single Channel Speech Enhancement by Frequency Domain Constrained Optimization and Temporal Masking,” to appear in the Proceedings of the International Conference on Spoken Language Processing, INTERSPEECH 2006, Pittsburgh, PA, USA, September 17-21, 2006, pp. 1411-1414
16. Jin, W., Scordilis, M.S., “Speech Enhancement by Residual Domain-Constrained Optimization,” Proceedings of the 5^th European Signal Processing Conference (EURASIP2005) on Speech and Image Processing, Multimedia Communications and Services, Smolenice, Slovakia, June 29-July 2, 2005, pp. 234-239
17. Jin, W., Scordilis, M.S., “Speech Enhancement by Kalman Filtering with Residual Noise Clipping,” Proceedings of the IEEE Southeast Conference, Fort Lauderdale, FL, April 8-10, 2005, pp. 225-228
18. He, X., Scordilis, M.S., “Improved Spread Spectrum Digital Audio Watermarking Based on a Modified Perceptual Entropy Psychoacoustic Model,” Proceedings of the IEEE Southeast Conference, Fort Lauderdale, FL, April 8-10, 2005, pp. 283-286
19. He X., Li, G, Scordilis, M.S., “A Novel VQ-based Speech Recognition Approach for Mobile Terminals,” Proceedings of the IEEE Southeast Conference, Fort Lauderdale, FL, April 8-10, 2005, pp. 433-436
20. Zhang, Y., Scordilis, M.S., “Robust Voiced/Unvoiced/Mixed/Silence Classifier with Maximum A Posteriori Channel/Background Adaptation,” Proceedings of the IEEE Southeast Conference, Fort Lauderdale, FL, April 8-10, 2005, pp. 229-232
21. Iliev, I.A., Scordilis, M.S., “Multilevel High Capacity Data Hiding Technique for Stereo Audio,” Proceedings of the 2004 Asilomar Conference, Pacific Grove, California, November 7-10, 2004, pp. 1793-1797
22. Jin, W., Scordilis, M.S., Iliev., I.A., “Comparison and implementation of a 16-bit fixed point audio resampler,” Proceedings of the 2004 Asilomar Conference, Pacific Grove, California, November 7-10, 2004, pp. 1798-1800
23. Bergman, D.A., Scordilis, M.S., “High-Ordered Adaptive FIR Filters for Acoustical Echo Cancellation,” Proceedings of the Audio Engineering Society’s (AES) 117th Convention, San Francisco, October 28-31, 2004
24. Zhang, Y., Scordilis M.S., “Optimization of GMM Training for Speaker Verification,” Proceedings of ODYSSEY 2004, the IEEE Speaker and Language Recognition Workshop, Toledo, Spain, May 31 – June 4, 2004, pp. 231-236
25. He, X., Iliev, I.A., Scordilis, M.S., “A High Capacity Watermarking Technique for Stereo Audio,” Proceedings of the IEEE International Conference on Acoustics Speech and Signal Processing, ICASSP2004, Montreal, Canada, May 2004, vol. 5, pp. 393-396
26. Zhang, Y., Fahmy, A.I, Scordilis M.S., “Speaker Verification Using Speaker-Specific Prompts,” Proceedings of the 17^th International Artificial Intelligence Research Symposium, FLAIRS 2004, Miami, Florida, May 17-19, 2004, pp. 826-832
27. Abdou, S., Scordilis, M.S., “An Efficient, Fast Matching Approach Using Posterior Probability Estimates in Speech Recognition,” Proceedings of the 8^th European Conference on Speech Communication and Technol­ogy, EUROSPEECH 2003, Geneva, Switzerland, September 1-4, 2003
28. Veprek, P., Scordilis, M.S., “Analysis, Enhancement and Evaluation of Five Pitch Determination Techniques,” Elsevier Science Journal of Speech Communication, Vol. 37, July 2002, pp. 249-270 (Best Research Paper Award; University of Miami College of Engineering 2003 Eliahu I. Jury Award for Excellence in Research. Most downloaded paper from the Elsevier website in 2002)
29. Iliev, I., Scordilis, M.S., “Binaural Phase Masking Experiments in Stereo Audio,” Proceedings of the First Pan-American/Iberian Meeting on Acoustics, Cancun, Mexico, December 2-6, 2002
30. Abdou, S., Scordilis, M.S., “Confidence Measures as a Speech Guide in Speech Recognition,” Proceedings of the 2002 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP2002, Orlando, Florida, Utah, May 13-17, 2002, vol. IV, pp. 4162
31. Abdou, S., Scordilis, M.S., “Integrating Multiple Knowledge Sources for Improved Speech Understanding,” Proceedings of the 7^th European Conference on Speech Communication and Technol­ogy, EUROSPEECH 2001, Aalborg, Denmark, August 3-7 2001
32. Jin, W., Scordilis, M.S., “Scalable Audio Coding for ATM Environments,” Proceedings of the 2001 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP2001, Salt Lake City, Utah, May 7-11, 2001
33. Abdou, S., Scordilis, M.S., “Multilevel Classification Trees for Initiative Tracking in Dialog Systems,” Proceedings of the 2001 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP2001, Salt Lake City, Utah, May 7-11, 2001
34. Jin, W., Scordilis, M.S., “A Scalable Subband Audio Coding Scheme for ATM Environments,” Proceedings of the 2001 IEEE Southeast Conference, SECON2001, Clemson, S.C., March3-April 1, 2001, pp. 271-275
35. Abdou, S., Scordilis, M.S., “Improved Speech Understanding Using Dialogue Expectation in Sentence Parsing,” Proceedings of the 6^th International Conference on Spoken Language Processing, ICSLP-2000, Beijing, Oct 2000
36. Grayden, D.B., Scordilis, M.S., “Using the Vowel Triangle in Automatic Speech Recognition,” Proceedings of the Sixth Australian International Conference on Speech Science and Technology, SST-96, Adelaide, Dec 1996, pp. 313-318
37. Veprek, P., Scordilis, M.S., “A Constrained DTW-Based Procedure for Speech Segmentation,” Proceedings of the Sixth Australian International Conference on Speech Science and Technology, SST-96, Adelaide, Dec 1996, pp. 545-550
38. Veprek, P., Scordilis, M.S., “Enhanced Speech Classification and Pitch Detection,” Proceedings of the Sixth Australian International Conference on Speech Science and Technology, SST-96, Adelaide, Dec 1996, pp. 521-526
39. Jenkin, K.L., Scordilis, M.S., “Automatic Syllable Stress Classification Methods,” Proceedings of the Sixth Australian International Conference on Speech Science and Technology, SST-96, Adelaide, Dec 1996, pp. 31-36
40. Jenkin, K.L., Scordilis, M.S., “Development and Comparison of Three Syllable Stress Parsers,” Proceedings of the 1996 International Conference on Spoken Language Processing, ICSLP, Philadelphia, 3-6 Oct 1996, Vol. 2, pp. 733-736
41. Scordilis, M.S. “A neuronal formant synthesizer,” Journal of Mathematics and Computers in Simulation, Special Issue on “Neural Networks/ Neurocomputing,” Vol. 40, Nos. 5-6, May 1996, pp. 615-622
42. Grayden, D.B., Scordilis, M.S., “Phoneme Recognition in Flu­ent Speech using Time-Delay and Fully Interconnected Neu­ral Networks: A Comparison,” Australian Journal of Intelligent Information Processing Systems, Vol.3, No.3, Spring 1996, pp. 5-8
43. Scordilis, M.S., “Current Speech Technology and the Need for Robust Processing,” Australian Speech Science and Technology Association Bulletin, No. 12, September 1995, pp. 3-4
44. Scordilis, M.S., Gowdy, J. N., “A Neural Network-based Control Strategy for a Speech Formant Synthesizer,” Journal of Artificial Neural Networks, Vol. 2, No. 3, 1995, pp. 195-103
45. Grayden, D.B. and Scordilis, M.S., “ASOR: A Continuous Phoneme Recognition System Integrating Neural Networks and Phonetic Knowledge,” Proceedings of the International Conference on Neural Networks and Signal Processing, ICNNSP’95, Vol. 1, Beijing, Dec. 1995, pp. I.788-I.791
46. Scordilis, M.S., Adams, S., “Experiments in Multi-microphone Speech Enhancement for Recognition,” Proceedings of the Fifth Australian International Conference on Speech Science and Technology, SST-94, Perth, Australia, 6-8 Dec. 1994, pp. 63-68
47. Grayden, D. B., Scordilis, M.S., “A Hierarchical Approach to Phoneme Recognition of Fluent Speech,” Proceedings of the Fifth Australian International Conference on Speech Science and Technology, SST-94, Perth, Australia, 6-8 Dec. 1994, pp. 473-478
48. Jenkin, K.L., Scordilis, M. S. “Automatic methods of Syllable Stress Classification in Continuous Speech,” Proceedings of the Fifth Australian International Conference on Speech Science and Technology, SST-94, Perth, Australia, 6-8 Dec. 1994, pp. 731-736
49. Grayden, D. B., Scordilis, M.S., “Phonemic Segmentation of Fluent Speech,” Proceedings of the 1994 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP94), pp. V.73-76
50. Jenkin, K.L., Scordilis, M. S. “A Continuous Speech Syllable Classifier Using Neural Networks,” Proceedings of the Australian and New Zealand Conference on Intelligent Information Systems, ANZIIS-93, Perth, Australia, 1-3 Dec. 1993, pp.249-253
51. Grayden, D. B., Scordilis, M.S., “Recognition of Obstruent Phonemes in Speaker-Independent Fluent Speech Using a Hierarchical Approach,” Proceedings of the 1993 European Speech Communication Conference, EUROSPEECH’93, Berlin, 21-23 Sept. 1993, pp. 855-859
52. Lim T.S., Scordilis, M.S., “New and Improved Pitch Determination for the IMBE Vocoder,” Proceedings of the Fourth Australian International Conference on Speech Science and Technology, SST-92, Brisbane, Australia, 1-3 Dec. 1992, pp. 375-380
53. Grayden, D. B., Scordilis, M.S., “TDNN vs. Fully Interconnected Multilayer Perceptron: A Comparative Study on Phoneme Recognition,” Proceedings of the Fourth Australian International Conference on Speech Science and Technology, SST-92, Brisbane, Australia, 1-3 Dec. 1992, pp. 214-219
54. Scordilis, M.S., Gowdy, J. N., “Speech Synthesis of Phonemic Triplets through a Neural Network-Controlled Formant Synthesizer,” Proceedings of the International Joint Conference in Neural Networks 1991, Seattle, USA, (IJCNN’91 SEATTLE), Vol II, p A-1007
55. Scordilis, M.S., “A Neural Network Cluster for the Control of a Speech Synthesizer,” in Tzafestas, S.G. (ed.), Engineering Systems with Intelligence: Concepts, Tools and Applications, Kluwer Academic Publishers 1991, pp. 229-235
56. Scordilis, M.S., Gowdy, J. N., “Neural Network Control for a Cascade/Parallel Formant Synthesizer,” Proceedings of the 1990 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP90), Albuquerque, NM, USA, 2-5 April 1990, pp. (S6a.1) 297-300
57. Scordilis, M.S., Gowdy, J. N., “Effects of the Vocal Tract Area Function on the Spectral Tilt of the Glottal Pulse Waveform,” Proceedings of the 1990 IEEE Southeast Conference, New Orleans, USA, 1-4 April 1990, pp.86-89
58. Scordilis, M.S., Gowdy, J. N., “Neural Network-based Generation of Fundamental Frequency Contours,” Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP89), May 24, Glasgow, Scotland, 1989, pp. (S16.S5.2) 219-222
59. Scordilis, M.S., Gowdy, J. N., “Text Processing for Speech Synthesis Using Parallel Distributed Models,” Proceedings of the IEEE Southeast Conference, Columbia, S.C., USA, April 1989
60. Scordilis, M.S., Gowdy, J. N., “A Phoneme-Dependent Voicing Source for Speech Synthesis,” Proceedings of the IEEE Southeastern Symposium on Systems Theory, Charlotte, NC, USA, 1988
61. Scordilis, M.S., Gowdy, J. N., “Comparison of Computerized Speech Synthesis Techniques,” Proceedings of the IEEE Southeast Conference, Richmond, VA, USA, April 1986

Dissertations and Masters Theses Advised

• Iliev, I. Alex, “Emotion Recognition Using Glottal and Prosodic Features”, Ph.D. Dissertation, University of Miami, 2009
• Jin, Wen, “Speech Enhancement by Linear Transformation and Constraint Optimization”, Ph.D. Dissertation, University of Miami, 2006
• Zhang, Yongxin, “Acoustic Model and Pronunciation Adaptation in Automatic Speech Recognition”, Ph.D. Dissertation, University of Miami, 2006
• He, Xing, “Psychoacoustic Modeling for Perceptual Audio Coding and Watermarking with Improved Synchronization”, Ph.D. Dissertation, University of Miami, 2006
• Abdou, Sherif, “Confidence Measures and a Search Guide in Speech Recognition”, Ph.D. Dissertation, University of Miami, 2003
• Grayden, David, “An Integrated Knowledge-Based Approach to Unrestricted Speech Recognition”, Ph.D. Dissertation, University of Melbourne, 1999
• Nocito, Carlos, “Network Condition Estimator for Voice Over IP Objective Quality Assessment”, Master Thesis, University of Miami, 2011
• Lu, Guipeng, “Prosodic Modifications in Speech Synthesis and the Effects of Pitch Errors”, Master Thesis, University of Miami, 2004
• Fahmy, Adel, “Text Prompted Speaker Verification Using Isolated Whole Word Hidden Markov Models”, Master Thesis, University of Miami, 2002
• Veprek, Peter, “Framework for the Development of Speech Synthesizers”, Master Thesis, University of Melbourne, 1996
• Jenkin, Karen, L., “Automatic Stress Syllable Classifiers and their Application in Continuous Speech”, Master Thesis, University of Melbourne, 1995

Honors & Awards

• Senior Member of the IEEE
• University of Miami, College of Engineering 2005 Research Paper Award Finalist for the Eliahu I. Jury Award for Excellence in Research, November 2005
• University of Miami Invention Recognition Award – UM04-23 for “High Capacity for Monophonic Audio Signals Using Differential Encoding in the Short-Phase Spectrum,” November 2004
• The University of Miami, College of Engineering 2003 Winner of the Eliahu I. Jury Award for Excellence in Research, November 2003 for “Veprek, P., Scordilis, M.S., “Analysis, Enhancement and Evaluation of Five Pitch Determination Techniques,” most downloaded paper from the Elsevier website in 2002)”
• University of Miami Invention Recognition Award, “Auxiliary Channel Masking in Audio Signals,” February 2001
• NCR Research Fellowship; 1984 – 1986

Editorial Responsibilities

• Associate Editor, Journal of the Franklin Institute (2007-2015)
• Finance Chair and Technical Committee Member for the 2009 IEEE 13th Digital Signal Processing Workshop & 5th IEEE Signal Processing Education Workshop (DSP/SPE)
• Technical Reviewer and Session Organizer, 17^th International Artificial Intelligence Research Symposium, FLAIRS 2004, Miami, Florida
• Technical Reviewer and Session Organizer, 5^th European Conference on Speech Communication and Technol­ogy, Rhodes, Greece
• Member of the International Scientific Com­mittee 1997 Technical Reviewer and Session Organizer, 5^th Intl. Conference on Spoken Language Processing Sydney, Australia; Member of the International Review Committee; 1998

Scientific Reviewing

Reviewer for several journals including: IEEE Transactions on Audio, Speech and Language Processing, IEEE Signal Processing Letters, Speech Communication, Signal Processing, Journal of the Franklin Institute, EURASIP Audio, Speech and Music Processing, MIT Press Computer Music Journal, Journal of the Acoustical Society of America, Informatica – An International Journal of Computing and Informatics, and others