What is modular demodulator?
What is modular demodulator?
mod´u`la`tor-de`mod´u`la`tor. n. 1. An electronic device that converts electronic signals into sound waves, and sound waves into electronic signals, used to transmit information between computers by the use of ordinary telephone lines; usually called a modem.
What is an example of modulator-demodulator?
A computer audio modem allows a computer to connect to another computer or to a data network over a regular analog phone line by using the data signal to modulate an analog audio tone. A modem at the far end demodulates the audio signal to recover the data stream.
What is the purpose of a modulator?
A modulator is an electronic circuit that superimposes a low-frequency (information) signal onto a high-frequency (carrier) signal for the purpose of wireless transmission. The reason for this is that higher frequency signals can be received using shorter aerials, which are more practical than longer ones.
What is a modulator-demodulator more commonly known as?
Modem.
What is the difference between modulator and demodulator?
Modulation is the process of influencing data information on the carrier, while demodulation is the recovery of original information at the distant end of the carrier.
Why is modem called modulator and demodulator?
When sending a signal, the device converts (“modulates”) digital data to an analog audio signal, and transmits it over a telephone line. Similarly, when an analog signal is received, the modem converts it back (“demodulates” it) to a digital signal.
What is modulation in simple words?
Modulation is the act or process of giving a wave or signal the amplitude or frequency of another wave or signal. In telecommunications, modulation is the process of conveying a message signal, for example a digital bit stream or an analog audio signal, inside another signal that can be physically transmitted.
Why modulation and demodulation is important?
At the broadcasting station, modulation is done to transmit the audio signal over larger distances to a receiver. When the modulated wave is picked up by the radio receiver, it is necessary to recover the audio signal from it. This process is accomplished in the radio receiver and is called demodulation.
Why do we need modulation and demodulation?
What is the meaning of modulation and demodulation?
– In modulation, the original message signal is mixed with a carrier wave whose parameters are required to be changed. In demodulation, the combination of carrier and message signal are separated from each other, to have an original information signal.
