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In radio transmission, you could theoretically transmit radio signals at audio frequencies.
However, because the wavelength of electromagnetism at audio-like frequencies is Huge and the frequency of a radio transmitter dictates the size of the antenna and the power requirement, you would need A Very Big Antenna and a Very Big Power Supply to do this. So, we've learned to transmit at higher "carrier" frequencies, modulating either the amplitude or frequency of the carrier signal with our audio and subtracting the carrier at the receiver end.
What else can I help you with?
What is the meaning of suppressed carrier in am?
radio an amplitude-modulated wave in which only the sidebands are transmitted, the carrier being removedhttp://dictionary.reference.com/browse/suppressed+carrier+modulation
What is changing the height of the carrier wave to match the signal called?
It is called "frequency modulation"
Is it true that information can be carried on a carrier wave by changing or modulating either the amplitude or frequency?
in frequency modulation, frequency of carrier signal changes. so frequency variations of carrier convey all the information in frequency modulation.
What is the function of modulator in a communication system?
Modulation is defined as a process by which any characteristics of a wave is varied as a function of the instantaneous value of another wave. The first wave which is a high frequency sine wave is known as carrier wave. Second wave is known as modulating wave and the resultant wave is known as the modulated wave.
What section of a transmitter impresses the audio information on the radio wave?
AF modulator. Audio signals produced by the microphone get amplified enough with the power to modulate the RF carrier wave generated by a RF oscillator.
To get information into its carrier wave every radio station has to amplify the carrier wave?
False.
To get information into its carrier wave every radio station has to amplify the carrier wave.?
False.
What is difference between modulated wave and carrier wave?
Carrier Wave: A carrier wave is a high-frequency electromagnetic wave that is used as the "carrier" or the base signal in a modulation process. It is typically a pure sine wave with a constant frequency and amplitude. The carrier wave by itself does not carry any information; it serves as a vehicle to carry the information from one location to another. In AM and FM radio broadcasting, the carrier wave is the primary signal transmitted by the radio station. Modulated Wave: A modulated wave is the result of combining the carrier wave with an information signal, such as an audio signal or data. Modulation is the process of varying the characteristics of the carrier wave (either its amplitude or frequency) in accordance with the information signal. There are two common types of modulation: Amplitude Modulation (AM) and Frequency Modulation (FM). In AM, the amplitude of the carrier wave is varied in proportion to the amplitude of the information signal. This variation encodes the information onto the carrier wave. In FM, the frequency of the carrier wave is varied in proportion to the amplitude of the information signal. This variation encodes the information onto the carrier wave. The modulated wave contains the information that needs to be transmitted, and it can be demodulated at the receiving end to retrieve the original information.
What modifies a carrier wave?
his dick
What is the wavelength of a carrier wave?
The wavelength of a carrier wave is the distance between two consecutive crests or troughs of the wave. It is inversely proportional to the frequency of the wave, so higher frequency waves have shorter wavelengths. In telecommunications, carrier waves are used to transmit information by modulating their properties.
Why oscillator is needed in transmitter circuit?
Low frequency signal are not able to get propagated throught longer distance. So it is to be carried by a carrier wave. Hence high frequency carrier wave is to be generated by the help of an oscillator. So we need an oscillator here a crystal oscillator to produce high frequency carrier waves.
Why is a carrier wave neede to transmit the human voice?
A carrier wave is needed to transmit the human voice because it provides a medium for transporting the voice signal. By modulating the voice signal onto the carrier wave, the voice signal can be efficiently transmitted over long distances through the air or through cables. The carrier wave acts as a stable platform on which the voice signal can be superimposed without being distorted.
In modulation a simple wave called a?
carrier
What is an adjustment to a carrier wave?
A phase modulation
Changing the wavelength of the carrier wave to match that of the signal is called?
Changing the wavelength of the carrier wave to match that of the signal is called modulation. This process allows the signal to be encoded onto the carrier wave for transmission and later decoded at the receiver to extract the original signal.
Am detector wave form?
It is high frequency carrier signal and low frequency carrier signal in Am detector in the same way of wave form as a result of graph...
How does a wave carrier affect what you hear on the radio?
The carrier wave carries the information that you hear. It is modulated by the sound which varies its amplitude or frequency. Without the carrier there would be nothing to vary so you would hear nothing.
