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Table 4 Positioning accuracy and precision related to the first configuration

From: Performance evaluation of an acoustic indoor localization system based on a fingerprinting technique

Experimental results
Error distance (cm) 5 6 8.5 12 15
Precision (%) obtained with four speakers 27.58 32.01 37.93 48.27 58.12
Precision (%) obtained with three best speakers 35.96 51.72 61.57 68.96 74.38