Acoustic emission (AE) activity reflects internal damage evolution in rock-like material. Therefore, the real-time monitoring of the AE activities during the failure process has become an important measure to evaluate the internal damage in the rock-like materials. AE events always occur at the location where the deformation localizes, and also the damage level is of course related to the AE energy release. AE signals may contain so many important details about micro fractures, such as the location, mode, m...