About my research
My research work is in the field of digital signal processing (DSP) with specific interests in audio and speech applications, time-frequency signal analysis, and machine learning including deep learning.
My other technical interest, which in part supports my research, is in software development specifically in, embedded microcontrollers and digital signal processors, mobile (iPhone) application programming, data science/machine learning code development, and in home/office automation.
Current focus areas
Selected themes and applications.
- AM-FM signal models and decompositions
- Instantaneous spectral analysis (ISA)
- Signal analysis of fast-varying frequency phenomena
- Speaker recognition, speech enhancement
- Synthetic/deep-fake speech detection
- Audio watermarking and authentication of speech recordings
Grants
Research awards, contracts, gifts, and grants.
50. Dept. of Energy, Sandia National Laboratories, “Collaborative Faculty and Student Research in Signal Processing and Machine Learning,” $325,094 (co-PI), 2022.
49. Dept. of Energy, Sandia National Laboratories, “Faculty Research in Signal Processing and Machine Learning,” $86,384 (PI), 2020.
48. Dept. of Energy, Sandia National Laboratories, “Using Software Defined Radios for Wireless Device Data Acquisition,” $64,108 (PI), 2020.
47. National Science Foundation, “CC*Compute: From Classroom to the Lab: NMSU Responds to the Changing HPC Landscape in New Mexico,” $399,869 (co-PI), 2020.
46. Dept. of Energy, Sandia National Laboratories, “Instantaneous Spectral Analysis for Identification and Classification of Bursty Data in Congested Frequency Bands,” $98,425 (co-PI), 2019.
45. Dept. of Energy, Sandia National Laboratories, “Faculty Research in Signal Processing and Machine Learning,” $55,027 (PI), 2019.
44. Northrup Grumman Corp., “Micro-Scale Initial Implementation (MSII) Program Bandpass Filter Development,” $87,100 (PI), 2019.
43. Dept. of Energy, Sandia National Laboratories, “Faculty Research in Signal Processing and Machine Learning,” $42,726 (PI), 2018.
42. Dept. of Energy, Sandia National Laboratories, “Instantaneous Spectral Analysis for Identification and Classification of Bursty Data in Congested Frequency Bands,” $162,690 (PI), 2018.
41. SameDay Security Corp., "Preparing the NMSU 3D Motion Capture System for Biomechanical Data Collection," $23,797 (PI), 2018.
40. Dept. of Energy, Sandia National Laboratories, “Faculty Research in Signal Processing and Machine Learning,” $46,633 (PI), 2018.
39. Dept. of Energy, Sandia National Laboratories, “Hilbert Spectral Analysis for Identification and Classification of Bursty Data in Congested Frequency Bands,” $98,600 (PI), 2018.
38. Dept. of Energy, Sandia National Laboratories, “Summer Faculty Research in Deep Learning, Mobile Analytics, and Signal Processing,” $47,330 (PI), 2017.
37. Dept. of Energy, Sandia National Laboratories, “Hilbert Spectrum Analysis of Moving Targets in ISR Data,” $94,251 (PI), 2017.
36. National Science Foundation, “Collaborative Proposal: Using Lean LaunchPad to Promote Transfer Students' Persistence in Engineering,” $348,043 (participant), 2014-2017.
35. Arrowhead Inc, winner of Launch competition for startup companies, “VoiceCipher, Inc,” awarded $25K in seed funding, 2013.
34. U.S. Army / Small Business Innovation Research (SBIR) grant Phase II, “Content Dependent Bandwidth Enhancement,” with Invertix Corp $700,000, 2011.
33. U.S. Army Research Laboratory (ARL)/Army High Performance Computing Research Center (AHPCRC), “Utilizing a Graphics Processing Unit (GPU) for Pattern Recognition with Applications in Digital Speech Processing,” $118,288 (PI), 2011.
32. U.S. Army Research Laboratory (ARL)/Army High Performance Computing Research Center (AHPCRC), “Utilizing a Multicore Graphics Processing Unit (GPU) for Low Bitrate Speech Coding,” $140,426 (PI), 2010.
31. U.S. Army / Small Business Innovation Research (SBIR) grant Phase I + Phase I option, “Content Dependent Bandwidth Enhancement,” with Invertix Corp $155,000, 2010.
30. U.S. Department of State, J. William Fulbright Foreign Scholarship Board, Fulbright Scholar Award - Austria, $25,000, 2008.
29. Sarnoff Corp/Rosettex Technology and Ventures Group, “Model-Based, Single-Microphone Speech Enhancement Model-Based, Single-Microphone Speech Enhancement,” $179,000, 2007 (PI).
28. Texas Instruments, “Proposal for Donation of TI DSP Boards,” $6000 [fifteen TMS320C6416DSKs DSP boards)], 2005 (PI).
27. Texas Instruments, “Proposal for Donation of TI DSP Boards,” $4000 [ten TMS320C6416DSKs DSP boards)], 2004 (PI).
26. Motorola, “Future Development Tools for the Real-Time DSP Laboratory,” $8400 (equipment donation) (PI), 2003.
25. NASA, “Research Supporting Satellite Communications Technology,” $200,000 (co-PI), 2003.
24. NASA, “Effective Utilization of Commercial Wireless Networking Technology in Planetary Environments,” $647,000 (PI), 2003-2005.
23. IBM, “Undergraduate Research Experience in Automatic Speech Recognition,” $2000 cash grant, $1000 Software donation (PI), 2002.
22. NASA, “Renewal of the Center for Space Telemetering and Telecommunications Systems Grant,” $160,000 (co-PI), 2002.
21. Xilinx Corp., “Xilinx University Professor’s Workshop,” $2180 (equipment donation) (PI), 2001.
20. NASA, “Renewal of the Center for Space Telemetering and Telecommunications Systems Grant,” $700,000 (co-PI), 2001.
19. Motorola Foundation, “Utilizing Next Generation Software Development Tools in the Motorola DSP Laboratory,” $10,500 (PI), 2001.
18. Air Force Research Laboratory, Human Effectiveness Directorate, “Techniques for Preprocessing Speech Signals for More Effective Audio Interfaces,” $125,000 (PI), 2000.
17. Motorola Foundation, “Utilizing Next Generation Software Development Tools in the Motorola DSP Laboratory,” $16,500 (cash grant) (PI), 2000.
16. NASA, “Renewal of the Center for Space Telemetering and Telecommunications Systems Grant,” $700,000 (co-PI), 2000.
15. Motorola Foundation, “Instrumentation Grant for the Real-Time Digital Signal Processing Teaching Laboratory,” $15,000 (PI), 1999.
14. Air Force Research Laboratory, Human Effectiveness Directorate, “Techniques for Preprocessing Speech Signals for More Effective Audio Interfaces,” $125,000 (PI), 1999.
13. Motorola Semiconductor Products Sector (SPS), “Proposal for Seven Addition DSP56302EVMs,” $1743 (equipment donation) (PI), 1999.
12. NASA, “Renewal of the Center for Space Telemetering and Telecommunications Systems Grant,” $700,000 (co-PI), 1999.
11. Aldec Corp., “Proposal for VHDL Simulator License Donation,” license donation of three Active-VHDL Simulators, $5,000 (equipment donation) (PI), 1999.
10. Motorola Semiconductor Products Sector (SPS), “Proposal for Six Additional DSP56302EVMs,” $1494 (equipment donation) (PI), 1998.
9. Motorola Foundation, “Proposal for a Digital Signal Processing Teaching Laboratory,” $10,000 (PI), 1998.
8. Xilinx Corp., “Proposal for Xilinx Foundation Express and FPGA Evaluation Boards,” $8,693 (equipment donation) (PI), 1998.
7. NASA, “Renewal of the Center for Space Telemetering and Telecommunications Systems Grant,” $644,000 (co-PI) 1998.
6. Motorola Semiconductor Products Sector (SPS), “Proposal for Twelve DSP56302EVMs,” $5,437 (equipment donation) (PI), 1998.
5. Motorola Semiconductor Products Sector SPS, “Proposal for a Digital Signal Processing Teaching Laboratory,” $11,500 (PI), 1997.
4. NASA, “Renewal of the Center for Space Telemetering and Telecommunications Systems Grant,” $700,000 (co-PI) 1997.
3. Motorola Semiconductor Products Sector SPS, “Proposal for a Digital Signal Processing Teaching Laboratory,” $1750 (PI), 1997.
2. Tektronix Inc., “Instrumentation for Digital Signal Processing Teaching Laboratory”, $3615 (equipment donation) (PI), 1997.
1. Motorola Semiconductor Products Sector (SPS), “Proposal for Twelve DSP56002EVMs,” equipment donation of twelve Motorola DSP56002EVM Evaluation Modules, $3875 (equipment donation) (PI), 1996.