Basic Signal Operations
What do you understand by a time-invariant system?
A system is said to be a time-invariant system if its characteristics do not change with time. i.e., if the input signal is delayed or advanced in time, then the output will also experience the same delay or advancement without changing its characteristics.
What are the classifications of systems?
1) Linear and non-linear systems.
2) Time Variant and Time Invariant systems.
3) Causal and Non causal systems.
4) Static and Dynamic Systems.
5) Stable and Unstable systems.
6) Invertible and Non invertible systems.
What are the steps to convert an analog signal into digital signals?
Step 1 : Sampling – analog signal converted into discrete time and continuous amplitude signal.
Step 2 : Quantization – quantized signal converted into discrete time and discrete amplitude signal or quantized signal.
Step 3 Encoding – quantized signal converted into codewords or digital data and by using line or block coding we can convert digital data into corresponding digital signal.
Basic Signal Operations
Basic signal operations are nothing but signal manipulation or modification tools that are used in signal processing and analysis. It helps to understand the signals in different situations. These operations allow the modification and enhancement of signals for specific applications.
In this article, we will discuss the basic signal operations and understand different operations related to the time and amplitude of the signal. In time transformations, we will cover time scaling, time shifting, and time reversal, and in amplitude transformations amplitude scaling of signals, amplitude reversal of signals, addition of signals, multiplication of signals, differentiation of signals and integration of signals. We also cover various advantages, disadvantages and applications of time and amplitude transformations.
Table of Content
- What are Basic Signal Operations?
- Classification
- Basic Signal Operations on Independent Variable Time
- Basic Signal Operations on Dependent Variable Amplitude
- Addition
- Multiplication
- Differentiation
- Integration