Why analog communication

Thus, one modulator is required at the transmitter end, and one demodulator is connected at receiving end for retrieving the original signal. The major drawback of Analog Communication is that the strength of the signal starts diminishing with the increase in the distance travelled. Thus, the signal to noise ratio starts getting degrade. Moreover, noise affects the Analog signal more than digital signal because analog signal is a continuous time-varying signal.

Digital Communication is the one which uses digital signals for transmitting information between source and destination. Digital signals are represented by a square wave. This signal consists of discrete values rather than continuous values. The digital signal is formed by the sampling of the analog signal. The samples of Analog signal are taken, and they are quantized.

After the sampling and quantization, the digital signal so obtained is modulated by digital modulation techniques. The digital communication system also consists of repeaters to intensify the signal which undergoes attenuation due to travelling a particular distance.

The repeaters intensify the information signal and suppress the noise signal. Thus repeaters also maintain the SNR effectively. The significant advantage of using Digital Communication is that it is not deteriorated by channel noise. This is because the digital signal is not a continuously varying signal.

Thus, if noise effects mix with the digital signal, the original signal can be retrieved from the distorted signal. This is because if noise effects one of the points of the signal amplitude, we know the range in which that point lies because digital signal consists of discrete values. Analog communication is entirely the use of continuous time varying signal for the transmission of information from the sender to receiver. On the other hand, digital communication utilizes the usage of digital technology for sending the information over the channel.

This shows his. Classroom Communication is normally considered as. The mode of communication that involves a single source transmitting information to a large number of receivers simultaneously, is called. In oral communication, what matters most is:. Communication over telephone is an example of. The best option to establish communication with your partners and sub-ordinates is? The effectiveness of oral communication depends on the speaker's ability to use:. Which one of the following is not a form of communication?

Communication through gesture is related to. Which one of the following can be termed as verbal communication? Suggested Test Series. Suggested Exams. More Communication Questions Q1. The depth of interpersonal relationships required by a job depends on. A communication process includes the following sequential steps. If we speak technically, all TV sets and radios are receivers, since they get information from the transmitting stations. A signal is a gesture, action, or sound that is used to convey send, receive, and process information between the sender and receiver.

A signal is a gesture, action, or sound that is used to establish communication between the sender and receiver. Signals are classified into various types based on their characteristics. However, they are mainly classified into two types: Analog signals and Digital signals. Analog and digital signals are further classified into Periodic and Aperiodic signals, as shown in the below figure.

Analog signal is a continuous signal whose characteristics amplitude, voltage or frequency changes continuously over a period of time. For example, in an analog audio signal, the voltage of the signal varies continuously with the pressure of the sound waves.

Some examples of analog signals are light signals, electrical signals, human speech signals, and mechanical signals. In an electrical signal, the current, voltage or frequency of the signal may be varied to represent the information. Analog signals are used to send information from one place to another place. Analog signals use some medium to transfer the information from one place to another place. For example, electrical signals use copper cables as the medium to send information from one place to another place; similarly, human speech signals uses air as the medium to send information from one place to another place.

Analog signals are generally denoted by sine waves. In practice, the analog signal experiences noise and distortion in the process of sending information from transmitter to receiver. Digital signal is a non-continuous electrical signal, which is used to convey send, receive, and process information between the sender and receiver.

In digital signal, the original information analog information is converted into a string of bits digital information before being transmitted. A collection of elements which works together to convey send, receive, and process information between the sender and receiver in digital form is called digital communication system.