Types of Signals
Let us study the classification of signals based on their distribution in the time domain.
- Analog signals: Analog signals are continuous time signals and they are used to represent data over a range of values. These are used to represent analogous values that vary with the continuous value of input for example the audio signals vary continuously with pressure change
- Human voice: This signal is produced by the larynx present in the throat of human beings. The vibration of vocal cords due to the passage of air results in the audio signal. The frequency of human sound is 350 Hz to 17KHz for women and 100Hz to 8KHz for men.
- Digital signals: Contrary to analog signals, digital signals are discrete in nature therefore, they are used to represent values that vary discretely with time. There are discontinuities in the digital signals, some examples of digital signals are signals in smartwatches and phones.
Signals and Systems
Electronics and communication engineering deals with signal processing and signal transmission. This field of engineering is known as signals and systems. In this article, we will introduce the readers to signals and systems by defining all the necessary terms and discussing the components that make up the communication system.
We will also categorize signals and systems based on their classification and try to understand them through circuit diagrams. The later part of the article will talk about the characteristics, advantages, and applications of signals and systems along with some limitations. The article will conclude with some frequently asked questions that the readers can refer to.
Table of Content
- Signals and Systems
- Components
- Signals
- Types
- Analog Vs Digital Signals
- System
- Conversion of Analog to Digital Signals
- Why do we need to convert an Analog Signal to a Digital Signal?
- Continuous Systems vs Discrete Systems
- Characteristics
- Advantages
- Disadvantages
- Applications