Mark A. Rae
Mark Rae holds a B.S. degree (1989) in Electrical Engineering and an M.S. degree (1994) in Electrical and Computer Engineering from the University of Wisconsin. He has over ten years of experience designing embedded real time data acquisition systems for commercial applications. His experience includes TI DSPs and PIC microcontrollers, interfacing to A/D and D/A converters, microphone pre-amp design, power amplifier design, power supply design, RS-232 and I²C serial bus interfaces.

Shawn K. Steenhagen
Shawn Steenhagen holds a B.S. (1989) and M.S. (1995) degrees in Electrical and Computer Engineering from the University of Wisconsin. He has over ten years of experience developing and implementing DSP algorithms and engineering tools for use in the areas of active sound & vibration control, acoustics and voice signal processing. He creates software in C, Texas Instruments (TI) fixed and floating point assembly, Visual C++ and Matlab. His software expertise emphasizes Code Reuse, testing & verification, execution & memory optimization, and PC/DSP User Interfaces.

Jerry J. Trantow
Jerry holds a B.S. (1984) degree in Computer Engineering and an M.S. degree (1987) in Digital Signal Processing from the University of Wisconsin. He has over 15 years of experience developing and implementing DSP software. His programming skills in assembly, Matlab, C, C++, and Windows driver development are complimented by his experience with the Software Development Process. Jerry has significant experience implementing version control, testing, project tracking, documentation and release control systems. His research interests are in constrained adaptive control, acoustics, and DSP. Jerry holds two patents involving adaptive control applications.

Mark C. Allie
Mark holds a B.S. (1981) and M.S. (1983) degree in electrical engineering from the university of Wisconsin Madison. His M.S. research was in active sound attenuation. He began work in the Corporate Research Department of Nelson Industries, Inc. in Stoughton WI, as a Research Engineer. He is currently a Consultant in Active Control and Electronics.  His research interests are in the areas of electroacoustics, audio system design, analog electronics and signal processing. He has published or presented over 30 papers in these fields and has been the inventor on as many patents. Mark is a member of the Audio Engineering Society, IEEE, and The Acoustical Society of America.

Extended Staff

Emeritus Professor R. A. Greiner
Dr. Greiner has consulted in the above areas and in vibration control, sound measurement and analysis and noise control with a variety of industrial clients. His publications over the years include a textbook on semiconductor devices and applications and many papers in the area of electronic instrumentation, audio systems and digital adaptive control. In the past ten years he has concentrated his research on active noise attenuation, adaptive digital filters and high speed digital signal processing and on applications of these techniques to industrial problems. He holds over a dozen patents in these and related areas. He has also worked and published on the statistics of musical signals and digital processing of audio signals. A recent interest has been in the sound quality of noisy products and the psychoacoustic evaluation of sound.

Dr. Greiner is a member of Eta Kappa Nu, Sigma Xi, Phi Kappa Phi, Tau Beta Pi, Kappa Eta Kappa, the IEEE and the Audio Engineering Society. He has been active in the AES since its formation in 1954. He was elected a Fellow of the AES in 1984 and has served as a member of the board of governors and as an editor of the Journal of the AES for many years.