Research and simulation of polyphase filter arithmetic in water acoustic signal processing

This paper mainly processes theory analyzing and arithmetic simulating to polyphase filter arithmetic in water acoustic signal processing.Polyphase filter arithmetic depends on sample and interpolation processing of the signal.Control the sampling frequency of the signal by connecting sample and interpolation.Predigest the configuration of sample-interpolation filter and depend on the principle of reducing multiplication operation,predigesting on configuration and deriving in mathematics,then get the configuration block and the mathematical expression of polyphase filter.Using MATLAB simulate the polyphase filter arithmetic,and theory analyze the simulation result.