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Table 5 Average RT60 values of the room where the measurements were performed

From: High precision hybrid RF and ultrasonic chirp-based ranging for low-power IoT nodes

Frequency (Hz) 250 500 1000 2000 4000 8000
RT60 (s) 1.17 0.94 0.78 0.78 0.79 0.59
Uncertainty (%) 7.8 6.2 4.8 3.4 2.4 1.9