Chapter 13
Introduction to Signals and Systems
Signal und System
Signals are sets of data or information.
One-dimensional signals include single-variable functions, such as the variations in air pressure over time in ...
Klassifizierung von Signalen
Signals are categorized as Continuous-time or discrete-time, Periodic or aperiodic, Analog or digital, and Causal or noncausal.
A continuous-time signal ...
Energie- und Leistungssignale
Consider an electric system with a resistor. Here, the voltage and current signals enable power and energy measurement across the resistor.
For a ...
Gerade und ungerade Signale
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 ...
Grundlegende kontinuierliche Zeitsignale
Basic continuous-time signals include the unit step function, unit impulse function, and unit ramp function. These are collectively referred to as ...
Rechteckige und dreieckige Impulsfunktion
The unit rectangular pulse function is mathematically represented by the rectangular function centered at the origin with a height of one unit.
Two ...
Exponentiale und sinusförmige Signale
The exponential function serves as an essential tool for characterizing waveforms that rise and decay rapidly. This function is defined using the ...
Grundlegende diskrete Zeitsignale
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 ...
Grundlegende Operationen an Signalen
Basic signal operations are time reversal, scaling, shifting, and amplitude transformations.
Time reversal mirrors a continuous-time signal about the ...
Klassifikation von Systemen-I
Linearity is a system property with a direct input-output relationship, combining homogeneity and additivity.
Homogeneity dictates that if an input is ...
Klassifikation der Systeme-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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