说明：  过采样近似完全重构 DFT 调制滤波器组的设计。首先,分析了传递函数和 混叠传递函数的性质，给出了因果 FIR DFT 调制滤波器组的系统延迟与线性相位 分析和综合原型滤波器阶数的关系。随后，过采样近似完全重构 DFT 调制滤波器 组的设计问题被描述为一个非凸优化问题。
(Near perfect reconstruction oversampled DFT modulated filter design. First, the analysis of the transfer function and Aliasing transfer function of the nature of the given causal FIR DFT modulated filter banks with linear phase delay of the system Analysis and synthesis prototype filter order relationship. Subsequently, the approximate perfect reconstruction oversampled DFT modulated filter Group design is described as a non-convex optimization problem. )