这个讯号在时间轴上是不连续的，称之为离散时间讯号(discrete-time signal)，其取样的周期为Ts，取样频率( sampling frequency )就是Fs=1/Ts。
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N-1 2D傅立叶转换的性质(discrete-time signal) 周期性与共轭对称性 傅立叶变换和反变换均以N为周期, F(u, v)=F(u+N, v)=F(u, v+N)=F(u+N, v+N) 如果f(x,y)是实函数, F(-u,-...
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离散序列通常用x(n)来表示，自变量必须是整数。 离散时间信号（Discrete-time Signal）是指在时间上取离散值，幅度取连续值的一类信号，可以用序列（Sequence）来表示。
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Discrete-Time Signal Processing 离散时间信号处理
discrete-time signal sequence 离散时间讯号序列
sequence discrete-time signal 离散时间讯号序列
discrete-time signal random 随机离散时间讯号
discrete time signal 离散时间信号
perfect discrete time signal 最佳离散信号
Discrete Time Signal Processing 离散时间信号处理
Discrete Time Signal Trajectory Scope 离散时间信号轨迹范围
Zransformation of discrete-time signal 离散时间信号的Z变换
In many contexts, processing discrete-time signal is more flexible and is often preferable to processing continuous-time signals.
在许多方面，处理离散时间信号要更加灵活些，因此比处理连续时间信号更为可取。
A device that is similar to a microprocessor, except that the internal CPU has been optimized for use in applications involving discrete-time signal processing.
一种类似于微处理器的的设备，不同的是它内部的CPU被优化，用于特定的应用，如离散信号处理。
As an important class of hybrid dynamical systems, a switched system is composed of several continuous time subsystems or discrete time subsystems and the switching signal among them.
切换动态系统是一类重要的混合动态系统，它是由几个连续时间子系统或离散时间子系统及作用在其中的切换规则构成的。
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