一种最优去噪线性相位滤波器组的FPGA实现

An optimal noise reduction linear phase filter banks based on FPGA

格型结构是一种可以快速高效设计过采样线性相位完全重建滤波器组的方法。一旦分析滤波器组设定后,对应的综合滤波器结构也就确定,但综合滤波器组参数却有很大的灵活性,从中可以找出具有最优去噪效果的综合滤波器组,构成一个完整的滤波器组。对于求解出的具有最优去噪效果的过采样线性相位完全重构滤波器组,文中用DSP Builder在FPGA上予以实现,并用modelsim进行功能仿真。

To design an oversampled linear phase perfect reconstruction filter banks with lattice structure is an efficient implementation.Once the analysis filter banks are ensured,the structure of synthesis filter banks is determined,but there is still lots of synthesis filter banks for the parameters are flexible,in which choose a synthesis filter banks for optimal noise reduction.This paper implements the design in FPGA with DSP Builder,and simulate the design on function with Modelsim.