多项滤波器算法在水声信号处理中的研究和仿真

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

主要对多项滤波器算法在水声信号处理中的应用进行了理论分析和算法仿真。为实现抽样率转换而产生的多项滤波器算法,通过对信号进行抽取和插值相结合的方法来控制信号的抽样率。对抽取-插值滤波器依照减少乘法运算次数的原则进行结构上的简化,并进行数学推导,最终得到多项滤波器的结构框图和数学表达式。运用MATLAB对多项滤波器算法进行仿真,并对仿真结果作了理论分析。

This paper mainly processes theory analyzing and arithmetic simulating to polyphase triter 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.