modulation and its necessity
Introduction:
Modulation is the method of changing the carrier signal in according to the message signal.The high-frequency sin wave signal is known as carrier signal in the process of modulation.That output signal is called as modulating signal.Modulation is a process which making a change of shift at the range with frequencies of signal
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Necessity modulation methods:
Let us see about necessity of modulation:
Signals which are engage the equal range of frequencies can be divided.
Modulation used in noise resistance, attentuation which is depends upon the communication channel.
Modulating a sine wave carrier creates it suitable to maintain the frequency content of the transfer signal as near as possible to the middle of the passband.
Necessity methods for modulation:
Let us see about necessity of methods for modulation,
Amplitude modulation (AM):
It is the process of changing the amplitude of the carrier with respect to the message signal.That output signal is called as amplitude modulating signal.This method is necessity for varying amplitude.
Frequency modulation (FM):
It is the process of changing the frequency of the carrier in according to the message signal.That output signal is called as frequency modulating signal. This method is necessity for varying frequency.
Phase modulation (PM):
It is the process of changing the phase of the carrier in according to the message signal. That output signal is called as phase modulating signal. This method is necessity for varying phase
Example:
This same process is done in fashion as a musician may modulate a tune from a musical instrument by changing of its volume, timing and pitch.
Parameters in a periodic waveform in musical instrument:
Amplitude ( by means of volume)
Phase ( by means of timing)
Frequency (by means of pitch)
All above parameters are modified in accordance of low frequency signal to attain the modulated output signal.
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Types of modulation:
Analog modulation method:
In analog modulation, the modulation is applied incessantly with respect to an analog information signal.
Digital modulation method:
In digital modulation, an analog carrier signal is modulated by a digital bit stream. Digital digital signal is converting to analog signal and the matching demodulation is used for converting analog signal to digital signal.
Modulation is the method of changing the carrier signal in according to the message signal.The high-frequency sin wave signal is known as carrier signal in the process of modulation.That output signal is called as modulating signal.Modulation is a process which making a change of shift at the range with frequencies of signal
Please try this Types of Potential Energy for solving your problems.
Necessity modulation methods:
Let us see about necessity of modulation:
Signals which are engage the equal range of frequencies can be divided.
Modulation used in noise resistance, attentuation which is depends upon the communication channel.
Modulating a sine wave carrier creates it suitable to maintain the frequency content of the transfer signal as near as possible to the middle of the passband.
Necessity methods for modulation:
Let us see about necessity of methods for modulation,
Amplitude modulation (AM):
It is the process of changing the amplitude of the carrier with respect to the message signal.That output signal is called as amplitude modulating signal.This method is necessity for varying amplitude.
Frequency modulation (FM):
It is the process of changing the frequency of the carrier in according to the message signal.That output signal is called as frequency modulating signal. This method is necessity for varying frequency.
Phase modulation (PM):
It is the process of changing the phase of the carrier in according to the message signal. That output signal is called as phase modulating signal. This method is necessity for varying phase
Example:
This same process is done in fashion as a musician may modulate a tune from a musical instrument by changing of its volume, timing and pitch.
Parameters in a periodic waveform in musical instrument:
Amplitude ( by means of volume)
Phase ( by means of timing)
Frequency (by means of pitch)
All above parameters are modified in accordance of low frequency signal to attain the modulated output signal.
Understand Free Fall Physics Problems is always challenging for me but thanks to all science websites to help me out.
Types of modulation:
Analog modulation method:
In analog modulation, the modulation is applied incessantly with respect to an analog information signal.
Digital modulation method:
In digital modulation, an analog carrier signal is modulated by a digital bit stream. Digital digital signal is converting to analog signal and the matching demodulation is used for converting analog signal to digital signal.