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mathrocks
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I have a question about finding the signal energy of a signal? What exactly are you suppose to do when you are given a certain function like
x(t)=rect(t) sin(2*pi*t)?
x(t)=rect(t) sin(2*pi*t)?
mathrocks said:I have a question about finding the signal energy of a signal? What exactly are you suppose to do when you are given a certain function like
x(t)=rect(t) sin(2*pi*t)?
A signal is any physical quantity that varies over time or space. It can be represented by a mathematical function or graph, and can convey information or carry energy.
A system is any physical or mathematical entity that processes a signal or set of signals to produce an output. It can be a physical device, a software program, or even a mathematical model.
Continuous-time signals are functions that are defined for all values of time within a certain interval, while discrete-time signals are only defined at specific points in time. Continuous-time signals are represented by continuous functions, while discrete-time signals are represented by sequences of numbers.
The three main types of systems are linear, time-invariant (LTI) systems, time-varying systems, and nonlinear systems. Linear systems have the property of superposition, meaning that their output is directly proportional to their input. LTI systems have the additional property of shift-invariance, meaning that their output is not affected by a time delay in the input. Time-varying systems have output that changes over time, while nonlinear systems do not follow the principles of superposition or shift-invariance.
Signals and systems are used in a wide variety of applications, including communication systems, control systems, image and video processing, audio and speech processing, and biomedical signal processing. They are essential in modern technology and play a crucial role in our daily lives.