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

Table 6

Resource consumption after placement and routing when combining the two innermost subarrays and when all microphones are active. Each subarray combination details the resource consumption of the filter and the beamforming stage.

Resources	Available resources	Inner 4 mics			Inner 12 mics			Inner 28 mics			All 52 mics
		Beamformer	Filters	Total	Beamformer	Filters	Total	Beamformer	Filters	Total	Beamformer	Filters	Total
4LUT	27696	377	839	1626	955	839	2202	2345	839	3592	4303	836	5547
DFF	27696	319	3858	4649	750	3860	5090	1680	3862	6038	2983	3862	7365
Interface logic	27696	144	144	432	432	144	720	1008	144	1296	1872	144	2160
RAM64x18	34	0	2	2	0	2	2	0	2	2	24	2	26
RAM1K18	31	4	0	4	12	0	12	28	0	28	28	0	28
MACC	34	0	2	6	0	2	6	0	2	6	0	2	6