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

Table 4

Resource consumption after placement and routing when combining microphone subarrays. Each subarray combination details the resource consumption of the filter and the beamforming stage.

Resources	Available	Inner 4 MICs			Inner 12 MICs			Inner 28 MICs			All 52 MICs
	Resources	Filters	Beamforming	Total	Filters	Beamforming	Total	Filters	Beamforming	Total	Filters	Beamforming	Total
Slice registers	106400	5043	626	6144	14859	1540	16882	34489	3195	38183	54042	4447	59093
Slice LUTs	53200	3612	344	4732	10759	754	12299	25032	1486	27318	37221	2221	42319
LUT-FF	86689	2329	199	2773	7013	512	7779	16353	1069	17698	23656	1664	27619
BRAM	140	0	2	2	0	6	6	0	14	14	0	22	22
DSP48	220	8	4	12	24	4	28	56	4	60	88	4	92