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

Figure 14

Waterfall diagrams of the proposed architecture. The figures are obtained by enabling only a certain number of subarrays. From (a) to (d): only the 4 innermost microphones, only the 12 innermost microphones, the 28 innermost microphones, and all microphones.

(a)

(b)

(c)

(d)