The document discusses various operations that can be performed on continuous time signals, including shifting, scaling, reflection, and decomposing a signal into its even and odd parts. It provides examples of applying each operation to a sample signal and includes the corresponding Matlab code. Key operations covered are shifting a signal by adding a time delay, compressing or expanding a signal through scaling, flipping the signal vertically through reflection, and extracting the even and odd parts of a signal based on their symmetry properties.
4. What is signal ?
-In electrical engineering, the fundamental quantity of
representing some information is called a signal. It does
not matter what the information is i-e: Analog or digital
information. In mathematics, a signal is a function that
conveys some information.
Types of signal:
1. Continuous time signal.
2. Discrete time signal.
Introduction:
9. Shifting operation:
x (t-t0) represent a time-shifted version of x(t).
If t0>0 then the signal is delayed by t0 second.
If t0 <0 then the signal represent the advanced
replica of x (t).