Chapter 13
Introduction to Signals and Systems
Сигнал и система
Signals are sets of data or information.
One-dimensional signals include single-variable functions, such as the variations in air pressure over time in ...
Классификация сигналов
Signals are categorized as Continuous-time or discrete-time, Periodic or aperiodic, Analog or digital, and Causal or noncausal.
A continuous-time signal ...
Сигналы энергии и мощности
Consider an electric system with a resistor. Here, the voltage and current signals enable power and energy measurement across the resistor.
For a ...
Четные и нечетные сигналы
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 ...
Основные сигналы, непрерывные по времени
Basic continuous-time signals include the unit step function, unit impulse function, and unit ramp function. These are collectively referred to as ...
Функция прямоугольного и треугольного импульса
The unit rectangular pulse function is mathematically represented by the rectangular function centered at the origin with a height of one unit.
Two ...
Экспоненциальные и синусоидальные сигналы
The exponential function serves as an essential tool for characterizing waveforms that rise and decay rapidly. This function is defined using the ...
Основные сигналы, дискретные по времени
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 ...
Основные операции с сигналами
Basic signal operations are time reversal, scaling, shifting, and amplitude transformations.
Time reversal mirrors a continuous-time signal about the ...
Классификация систем-I
Linearity is a system property with a direct input-output relationship, combining homogeneity and additivity.
Homogeneity dictates that if an input is ...
Классификация систем-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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