Chapter 13
Introduction to Signals and Systems
信号とシステム
Signals are sets of data or information.
One-dimensional signals include single-variable functions, such as the variations in air pressure over time in ...
シグナルの分類
Signals are categorized as Continuous-time or discrete-time, Periodic or aperiodic, Analog or digital, and Causal or noncausal.
A continuous-time signal ...
エネルギーおよび電力信号
Consider an electric system with a resistor. Here, the voltage and current signals enable power and energy measurement across the resistor.
For a ...
偶数信号と奇数信号
An even signal, either in continuous-time or discrete-time, is defined as a signal that matches its own time-reversed version.
Even signals are ...
基本的な連続時間信号
Basic continuous-time signals include the unit step function, unit impulse function, and unit ramp function. These are collectively referred to as ...
矩形および三角パルス関数
The unit rectangular pulse function is mathematically represented by the rectangular function centered at the origin with a height of one unit.
Two ...
指数関数的信号と正弦波信号
The exponential function serves as an essential tool for characterizing waveforms that rise and decay rapidly. This function is defined using the ...
基本的な離散時間信号
The unit step sequence is expressed as 1 for zero and positive values of integer 'n'. This can be graphically displayed using a set of eight ...
シグナルの基本操作
Basic signal operations are time reversal, scaling, shifting, and amplitude transformations.
Time reversal mirrors a continuous-time signal about the ...
システムの分類-I
Linearity is a system property with a direct input-output relationship, combining homogeneity and additivity.
Homogeneity dictates that if an input is ...
システムの分類-II
Continuous-time systems have continuous input and output signals, with time measured continuously, and are generally defined by differential or algebraic ...
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