《数字信号处理》教学参考资料(Numerical Recipes in C,The Art of Scientific Computing Second Edition)Chapter 01.1 Preliminaries 1.1 Program Organization and Control Structures
Transform-Domain Representation of Discrete-Time Signals Three useful representations of discrete-time sequences in the transform domain: Discrete-time- Fourier Transform(DTFT) YDiscrete Fourier Transform(DFT) z- -Transform
Stability Condition in Terms of the Pole Locations A causal lti digital filter is BIBO stable if and only if its impulse response h[n] is absolutely summable, i.e