EC8352 SS Notes, Signals & Systems Lecture Handwritten Notes

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EC8352 SS Notes

Anna University Regulation 2017 EC8352 SS Notes, Signals & Systems Lecture Handwritten Notes for all 5 units are provided below. Download link for 3rd SEM EC8352 Signals & Systems Lecture Handwritten Notes are listed down for students to make perfect utilization and score maximum marks with our study materials.

Unit -1 EC8352- Signals & Systems

1.1 Signal

Signal is one that carries information and is defined as a physical quantity that varies with one or more independent variable. Example: Music, speech

1.2 Classification of signals

1.2.1 Analog and Digital signal

Analog signal: A signal that is defined for every instants of time is known as analog signal. Analog signals are continuous in amplitude and continuous in time. It is denoted by x(t). It is also called as Continuous time signal. Example for Continuous time signal is shown in Fig 1.1

Digital signal:

The signals that are discrete in time and quantized in amplitude is called digital signal (Fig 1.2)
1.2.2 Continuous time and discrete time signal

Continuous time signal:

A signal that is defined for every instants of time is known as continuous time signal. Continuous time signals are continuous in amplitude and continuous in time. It is denoted by x(t) and shown in Fig 1.1

Discrete time signal:

A signal that is defined for discrete instants of time is known as discrete time signal. Discrete time signals are continuous in amplitude and discrete in time. It is also obtained by sampling a continuous time signal. It is denoted by x(n) and shown in Fig 1.3

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