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

Table 11

Comparison of architectures when applying the parallel continuous time multiplex strategy. The maximum number of beamformers is obtained based on the available resources and the resource consumption of each beamformer (Table 6 and reported in [10]). The value of corresponds to the maximum frequency reported by the Vivado 2016.4 tool after placement and routing.

	High-performance architecture [10]				Power-efficient architecture
	4 mics	12 mics	28 mics	52 mics	4 mics	12 mics	28 mics	52 mics
	55	23	10	6	170	117	59	11
	—	—	—	—	70	70	70	70
(MHz)	95.62	93.27	91.97	87.91	165.04	141.70	112.91	94.22
Performance (Or/s)