The paper presents linear predictors and causal filters for discrete time signals featuring some different kinds of spectrum degeneracy. These predictors and filters are based on approximation of ideal non-causal transfer functions by causal transfer functions represented by polynomials of Z-transform of the unit step signal.

翻译：本文针对具有不同类型谱退化的离散时间信号，提出了线性预测器与因果滤波器。这些预测器和滤波器基于通过单位阶跃信号的Z变换多项式所表征的因果传递函数，对理想非因果传递函数进行逼近。