Understanding Acoustic Emission Testing- Reading 1 Part B-A

■ Event counting — Circuitry is available which counts each acoustic
emission event only once, by recognizing the end of each burst emission in
terms of a predetermined length of time since the last count (i.e., since the
most recent crossing of the threshold). In Figure 16.4, for instance, the
number of events is three. This method records the number of events, which
may be very important, but provides no information about the amplitudes
involved.
Charlie Chong/ Fion Zhang
since the most recent
crossing of the threshold