What is modulation in physics?
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Modulation is defined as the process of superimposing a low-frequency signal on a high-frequency carrier signal. Or. The process of varying the RF carrier wave in accordance with the information in a low-frequency signal.
What is modulation in physics class 12?
Modulation. It is the phenomena of superimposing the low audio frequency baseband message or information signals or modulating signal on a high-frequency carrier wave. The resultant wave is called the transmitted wave, which is transmitted.
What is modulation and example?
For example, the modulation signal might be an audio signal representing sound from a microphone, a video signal representing moving images from a video camera, or a digital signal representing a sequence of binary digits, a bitstream from a computer. The carrier is higher in frequency than the modulation signal.
What is modulation and type of modulation?
Modulation is the process of converting data into electrical signals optimized for transmission. Modulation techniques are roughly divided into four types: Analog modulation, Digital modulation, Pulse modulation , and Spread spectrum method.
Why is modulation used?
Modulation allows us to send a signal over a bandpass frequency range. If every signal gets its own frequency range, then we can transmit multiple signals simultaneously over a single channel, all using different frequency ranges. Another reason to modulate a signal is to allow the use of a smaller antenna.
What is modulation class 11?
Modulation:- The process of superimposing a low frequency signal on a high frequency wave, which acts as a carrier wave for long distance transmission is known as modulation.
What is modulation and its necessity Class 12?
Modulation. The process by which some characteristics of a relatively high frequency wave ( called carrier wave ) is varied in accordance with the instantaneous value of a low frequency wave ( called modulating wave ) is called modulation.
What is the short definition of modulation?
Definition of modulation 1 : an inflection of the tone or pitch of the voice specifically : the use of stress or pitch to convey meaning. 2 : a regulating according to measure or proportion : tempering. 3 : a change from one musical key to another by modulating.
What does modulator mean?
1 : to tune to a key or pitch. 2 : to adjust to or keep in proper measure or proportion : temper. 3 : to vary the amplitude, frequency, or phase of (a carrier wave or a light wave) for the transmission of information (as by radio) also : to vary the velocity of electrons in an electron beam.
Why do we do modulation?
What is called modulation?
Modulation is the process of converting data into radio waves by adding information to an electronic or optical carrier signal. A carrier signal is one with a steady waveform — constant height, or amplitude, and frequency.
What is modulation and why do we need it?
Amplitude Modulation: It is the process in which the amplitude of carrier signal is varied according to the amplitude of the message signal.
What does modulation refer to?
Frequency Modulation
What are the different types of modulation?
Abstract. Biphotochromic fluorescent protein SAASoti contains five cysteine residues in its sequence and a V127T point mutation transforms it to the monomeric form,mSAASoti.
What is an example of modulation?
Amplitude modulation (AM)