Design Considerations When Accelerating an FPGA-Based Digital Microphone Array for Sound-Source Localization

The use of microphone arrays for sound-source localization is a well-researched topic. the response of such sensor arrays is dependent on the quantity of microphones operating on the array. a higher number of microphones,however,increase the computational demand,making real-time response challenging. in this paper,we present a filter-and-sum based architecture and several acceleration techniques to provide accurate sound-source localization in real-time. experiments demonstrate how an accurate sound-source localization is obtained in a couple of milliseconds,independently of the number of microphones. finally,we also propose different strategies to further accelerate the sound-source localization while offering increased angular resolution. © 2017 bruno da silva et al.