Research on Anti-reverberation Method Based on Local Wave Vector

In this paper, a new concept of local wave vector is used to describe the spatial propagation characteristics of sound field at this location. Through the analysis of the local wave vector of the sound field, it can be concluded that the local wave vector of the traveling wave field points to the propagation direction of the traveling wave, and its modulus is a constant, while the local wave vector of the reverberation field has no fixed propagation direction and its modulus is not constant. This characteristic of local wave vector can be used to judge whether traveling wave field exists in sound field or not. The simulation results show that the detection performance of the local wave vector variance detector is better than that of the traditional maximum likelihood detector, orthogonal receiver. The data processing results of the tank experiment show that the existence of traveling wave field can be effectively judged by calculating the local wave vector and the target echo signal can be detected under strong reverberation condition by using the local wave vector variance detector.