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

Table 3

Summary of the design considerations per stage.

Stage	Design consideration	Effect
Microphone array	PDM MEMS microphones	Deactivation of microphones.
	Subarray decomposition	Power savings.
Filter stage	Moving average filter	Resource savings. Improved dynamic range.
	Serial FIR filter	Resource savings.
Beamforming stage	Subarray decomposition	Power and resource savings.