Detection And Feature Analysis Of Dolphin Whistle Signal In Complex Environment

As a kind of aquatic mammal,dolphins are obviously different from other Marine creatures in their interactions,predation and other behaviors.It has a biological sonar system that is superior to the artificial sonar system in communications,positioning and environmental identification,and relies on sonar system dolphins for various biological activities.The dolphin can emit different types of sound signals,and the whistle signal plays an important role in the communication of dolphins.With the development of bionics and the progress of technology,the study of dolphins has been increasing year by year,and the research and analysis of dolphin whistle signals has become an important part of dolphin bionics research.Based on this,this paper discusses and analyzes the detection,extraction and analysis of dolphin whistle signals.In this paper,the real-time acquisition of dolphin whistle signals is firstly introduced.The simulation analysis of several detection methods in time domain and frequency domain is simulated,and the simulation of noise interference is simulated and the detection method is simulated.The effectiveness and robustness of each test method under different conditions are analyzed.Finally,the actual acquisition signal is adopted to further verify its validity.Based on the detection results,the acquisition signal is further processed.Combined with the time-frequency joint feature of signal,the time frequency contour of the dolphin whistle signal spectrum is extracted,and the combination of amplitude and phase information is used to model and synthesize the whistle pure signal.Finally,the characteristics of the signal of whistle are analyzed,and the characteristics of the general signals are shown to realize the preliminary exploration of the research on the release of dolphin whistle signals.