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Computers 2018, 7(3), 41; https://doi.org/10.3390/computers7030041

FPGA-Based Architectures for Acoustic Beamforming with Microphone Arrays: Trends, Challenges and Research Opportunities

1
Department of Industrial Sciences (INDI), Vrije Universiteit Brussel (VUB), 1050 Brussels, Belgium
2
Department of Electronics and Informatics (ETRO), Vrije Universiteit Brussel (VUB), 1050 Brussels, Belgium
3
Department of Electronics and Information Systems (ELIS), Ghent University (UGent), 9052 Ghent, Belgium
*
Author to whom correspondence should be addressed.
Received: 7 June 2018 / Revised: 31 July 2018 / Accepted: 1 August 2018 / Published: 3 August 2018
(This article belongs to the Special Issue Reconfigurable Computing Technologies and Applications)
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Abstract

Over the past decades, many systems composed of arrays of microphones have been developed to satisfy the quality demanded by acoustic applications. Such microphone arrays are sound acquisition systems composed of multiple microphones used to sample the sound field with spatial diversity. The relatively recent adoption of Field-Programmable Gate Arrays (FPGAs) to manage the audio data samples and to perform the signal processing operations such as filtering or beamforming has lead to customizable architectures able to satisfy the most demanding computational, power or performance acoustic applications. The presented work provides an overview of the current FPGA-based architectures and how FPGAs are exploited for different acoustic applications. Current trends on the use of this technology, pending challenges and open research opportunities on the use of FPGAs for acoustic applications using microphone arrays are presented and discussed. View Full-Text
Keywords: FPGA; architectures; acoustics; microphone array; beamforming FPGA; architectures; acoustics; microphone array; beamforming
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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da Silva, B.; Braeken, A.; Touhafi, A. FPGA-Based Architectures for Acoustic Beamforming with Microphone Arrays: Trends, Challenges and Research Opportunities. Computers 2018, 7, 41.

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