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

Table 2

Relevant parameters involved in the performance calculation for the proposed architecture.

Parameter	Definition
	Sensing time
	Execution time of one orientation
	Number of orientations
	Latency of the system
	Time required to obtain a polar power map
	Initiation interval of the filter stage
	Execution time of the filter stage
	Initiation interval of the beamforming stage
	Execution time of the beamforming stage
	Initiation interval of the power stage
	Execution time of the power stage
	Sum of all initiation intervals
	Initiation interval of the CIC filter
	Initiation interval of the removed DC block
	Initiation interval of the FIR filter
	Initiation interval of the delay memories
	Initiation interval of the cascaded sums
	Initiation interval of the power calculation