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Eric DiethornEric J. Diethorn
Research Scientist

"My position at Avaya allows me to develop technologies that add value and quality to our telephony products."
My Research
As a member of Avaya’s Research division, I research and develop acoustical signal processing technologies for speech communications. Much of my work is transferred to colleagues in Avaya’s Converged Systems and Communications Appliances Divisions (CAD and CSD), where it is used in telephones and gateways. As a member of Avaya Labs, I address both the near-term needs of the business units as well as the long-term needs associated with next-generation voice functionality in our enterprise telephony products. A stimulating and satisfying aspect of my job is that I work closely with field applications engineers to address customer-related voice quality engineering problems.
 
I have B.S., M.S. and Ph.D. degrees, all in electrical engineering, though I don’t work with wires much at Avaya. My expertise is signal processing, and my specialty is acoustic- and electrical-echo cancellation and control for telephony. I’m also interested in most aspects of speech signal processing, such as noise reduction for speech enhancement. I enjoy researching signal processing algorithms, programming them in high-level languages for simulation and experimentation, and, finally, programming them in assembly code for real-time digital signal processor implementations.
Projects
My current projects at Avaya encompass echo control, wideband speech communications, multichannel audio conferencing, and end-to-end voice quality engineering.
 
This Fall, I was an Avaya Labs Cup award recipient, along with team members Gary Elko, William Ford, James Graf, Prakash Khanduri, Michael Lange, John Orleanski, Yogesh Patel , Odell Robinson and Rick Szajdecki. Our End-to-End IP Audio Team won this award for our efforts targeted at improving voice quality engineering across Avaya’s product line. The Avaya Labs Cup award recognizes individuals and teams who best demonstrate the Avaya Values and other qualities such as leadership, teamwork, risk taking and responding to challenges.
Publications
Some of my recent publications and presentations include a talk and lecture I gave at the 2005 International Workshop on Acoustic Echo and Noise Control, held in Eindhoven, the Netherlands, and entitled “Foundations of spectral-gain formulae for speech noise reduction.” Also this past year, I gave a lecture entitled “Some aspects of wideband speech in enterprise telephony” at the ETSI-sponsored 2nd Workshop on Wideband Speech Quality in Terminals and Networks, held Mainz, Germany.
 
For those interested, here’s a more detailed list of my recent publications:
E. J. Diethorn, “Foundations of spectral-gain formulae for speech noise reduction,” 2005 International Workshop on Acoustic Echo and Noise Control, Eindhoven, The Netherlands, Sept. 12 – 15, 2005.
E. J. Diethorn, “Some aspects of wideband speech in enterprise telephony,” 2nd Workshop on Wideband Speech Quality in Terminals and Networks: Assessment and Prediction, 22nd and 23rd June 2005, Mainz, Germany.
T. Gaensler, J. Benesty, E. J. Diethorn, and V. Fischer, “Algorithm Design of a Stereophonic Acoustic Echo Canceler System, 2001 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, Oct. 21-24, Mohonk Mountain House, New Paltz, NY.
E. J. Diethorn, “Improved Decision Logic for Two-Path Echo Cancelers, “ 2001 International Workshop on Acoustic Echo and Noise Control, Darmstadt, Germany, Sept. 10-13 2001.
V. Fischer T. Gaensler, E. J. Diethorn, and J. Benesty, “A Software Stereo Acoustic Echo Canceler for Microsoft Windows, “ 2001 International Workshop on Acoustic Echo and Noise Control, Darmstadt, Germany, Sept. 10-13 2001.
E. J. Diethorn, “Subband Noise Reduction Methods for Speech Enhancement,” chapter 9 in Acoustic Signal Processing for Telecommunication, S. L. Gay and J. Benesty, eds., Kluwer Academic Publishers, Boston, 2000.
CONTACT INFORMATION
PhoneTel. 908-696-5209
letterejd_AT_avaya_DOT_com
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