Table 3 AE system parameters41.

From: Effect of thickness ratio on uniaxial mechanical behavior of soft-hard composite rock masses: experimental analysis and modeling

Number of channels

Trigger mode

Threshold value

Pre-amplification

/dB

Sampling frequency/KHZ

Interface

type

Conversion accuracy

(bit)

4

Threshold triggering

40

40

30

USB

3.0

16

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