Testing a Novel Hybrid Spiral Microphone Array designed for Performance and Portability


  • Matthew Aldeman Illinois State University
  • Jin Jo




microphone, array, localization, algorithm, resolution, ensemble


In this investigation a novel hybrid spiral microphone array system is designed and constructed to maximize the overall performance of the array under the constraint that the array must be portable and capable of being transported in a small hatchback vehicle. Several microphone array designs are considered before settling on a modified Fermat spiral with microphones located exclusively on the axes of the array, enabling the array to be quickly disassembled into a small number of sections, transported to a remote location, and then re-assembled. The performance of the new microphone array is tested against an existing microphone array that was also designed for portability but with a more conventional logarithmic spiral design. The resolution of the new hybrid spiral array is found to greatly exceed the resolution of the conventional portable microphone array.

Author Biographies

Matthew Aldeman, Illinois State University

Matt Aldeman is an Associate Professor of Technology at Illinois State University, where he teaches in the Engineering Technology and Renewable Energy programs. Matt joined the Technology department faculty after working at the Illinois State University Center for Renewable Energy for over five years. His research interests include acoustic localization and optimization of grid-connected renewable energy systems. Matt is an honors graduate of the U.S. Naval Nuclear Power School and holds a B.S. in Mechanical Engineering from Northwestern University, a Master of Engineering Management from Old Dominion University, and a Ph.D. in Mechanical and Aerospace Engineering from the Illinois Institute of Technology.

Jin Jo

Dr. Jin Ho Jo is a Professor of Technology at Illinois State University, teaching in the Renewable Energy program. Dr. Jo is the program coordinator and also leads the Sustainable Energy Research Group at ISU. Dr. Jo is an honors graduate of Purdue University where he earned a B.S. in Building Construction Management. He earned his M.S. in Urban Planning from Columbia University where he investigated critical environmental justice issues in New York City. His 2010 Ph.D. from Arizona State University was the nation’s first in sustainability. His research, which has been widely published, focuses on the use of renewable energy systems and sustainable building strategies to reduce negative impacts of urbanization.




How to Cite

Aldeman, M., & Jo, J. (2023). Testing a Novel Hybrid Spiral Microphone Array designed for Performance and Portability. Journal Akustika, 45(45). https://doi.org/10.36336/akustika20234547