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Is it true that information can be carried on a carrier wave by changing or modulating either the amplitude or frequency?
Wiki User
∙ 13y ago
in frequency modulation, frequency of carrier signal changes. so frequency variations of carrier convey all the information in frequency modulation.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoIt is true.
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What is changing the height of the carrier wave to match the signal called?
It is called "frequency modulation"
What causes an electric humming sound in equipment?
The sounds are caused by the oscillations of the frequency changing from positive to negative when voltage is applied to electrical equipment.See related links below.
Why semi log paper is used for frequency vs gain plot?
the sem-ilog paper is used to draw the data that are changing with an exponential relationship. it is preferable when one variable covers a large range of values and other has only a restricted range.
When was Changing Times - film - created?
Changing Times - film - was created on 2004-12-08.
Is periphrasis a scheme or a trope?
trope because scheme involves changing the structure of a sentenc while trope involves changing the meaning.
How do waves carry signals?
Waves can be varied (modulated) by either changing amplitude (amplitude modulation AM) or changing frequency (wavelength) (frequency modulation FM). The modulations are used to carry the information signal.
Does changing the frequency change the amplitude?
In respect to what? But frequency is different than amplitude, so no.
What is changing amplitude or frequency called?
modulation
If the frequency in AM does not change then how are these sidebands formed?
The process of changing the amplitude of the "carrier" so as to add information to it (modulation) doesn't change the frequency of the carrier. But it does create energy at two other newfrequencies.The new frequencies are equal to (carrier frequency) plus and minus (the modulating frequency). These are referred to as the upper and lower sidebands.The upper sideband is an exact copy of the modulating signal, but with every component of it shifted up by an amount equal to the carrier frequency. The lower sideband is a mirror image of the upper sideband, with every frequency component in it reflected about the carrier frequency.
How does changing the amplitude change the frequency?
There's no connection between amplitude and frequency. Either one can change, and often does, with absolutely no effect on the other.
What is the modulation of frequency?
It is a device or electronic circuit that changes the frequency of an oscillator according to the amplitude of modulating signal. For instance, if the modulation is linear, the modulator changes the frequency proportional to the amplitude of the modulating voltage.
Operation of a transformer?
Transforming a signal without changing its frequency.(amplitude can be changed)
Is changing the frequency of the carrier wave to match the amplitude of the signal is called frequency modulation?
more or less, yes
How was it possible to send a message using radio waves?
Information, such as sound, is carried by systematically changing (modulating) some property of the radiated waves, such as their amplitude, frequency, phase, or pulse width. When radio waves strike an electrical conductor, the oscillating fields induce an alternating current in the conductor. The information in the waves can be extracted and transformed back into its original form. Hope this helps from scottadroid :D
What is a changing electric current that carries information is called a?
I beleive what you are referring to is a modulated signal which can be either amplitude, frequency or phase modulation. As with radio signals carrying information: AM, FM or PM.
What affect if any does frequency have on the amplitude of a wave?
The sound pressure amplitude tells about how loud the tone will be and the frequency (cycles per second) of the oscillation tells how high the sound of the tone will be. The amplitude gives the loudness of the tone: http://en.wikipedia.org/wiki/Loudness The frequency gives the pitch of the tone: http://en.wikipedia.org/wiki/Pitch_%28music%29
How are radio and television waves added to em waves?
by changing the amplitude or frequency of the radio waves.
