... USB Acoustic USB Acoustic emission Acquisition Card•Acoustic emission inputs: 2channels/card, each channel can acquire waveform, do FFT analysis ... ASL100dB•Dynamic Range: 90dB•Extracted AE Features: Time of First Threshold Crossing, Time to Peak, Peak Amplitude, Counts, Duration, ... Energy, Counts to Peak, Rise Time, RMS, ASL, Hits Rate, Hits, Parametric 1-4,Spectral ...