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

Table 7

Power consumption expressed in mW when combining microphone subarrays. The values are obtained from the Libero SoC v.11.8 power report for the FPGA operating at and considering the standard mode of the PDM MEMS microphones [38].

Active subarrays	MEMS microphones			Reported on-chip power			Total power
	Active	Inactive	Total	Static	Dynamic	Total
Inner 4 mics	3.096	1.036	4.132	13.963	3.818	17.781	21.913
Inner 12 mics	9.288	0.864	10.152	15.333	4.831	20.164	30.316
Inner 28 mics	21.672	0.518	22.190	15.933	6.819	22.752	44.942
All 52 mics	40.248	0	40.248	15.943	7.794	23.738	63.986