Design Exploration and Performance Strategies towards Power-Efficient FPGA-Based Architectures for Sound Source Localization

Figure 17

Theoretical waterfall diagrams of the power-efficient architecture obtained for 64 orientations. The plots are obtained by enabling only a certain number of subarrays. (a–d) Only the 4 most inner microphones, only the 12 most inner microphones, the 28 most inner microphones, and all microphones.