Using a Planar Array of MEMS Microphones to Obtain Acoustic Images of a Fan Matrix

Table 1

Errors on the estimated center coordinates.

	Azimuth error [°]	Elevation error [°]
Fan #1	0.60	0.43
Fan #2	1.67	0.63
Fan #3	0.15	0.77
Fan #4	2.07	1.41
Fan #5	2.33	1.14
Fan #6	1.83	0.92
Fan #7	1.40	0.28
Fan #8	2.49	0.24
Fan #9	1.25	1.46
Averaged error	1.53	0.81
Standard deviation	1.70	0.92