What does it mean if something is modulated?
What does it mean if something is modulated?
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.
What is modulation in grammar?
Definition of modulation 1 : an inflection of the tone or pitch of the voice specifically : the use of stress or pitch to convey meaning.
What is the another name of modulating signal?
The amplitude modulation is called amplitude shift keying (ASK), when the data signal is a digital signal.
How do you use modulation in a sentence?
Modulation in a Sentence
- Since she was playing a male role in the play, the actress had to focus on the modulation of her voice’s pitch.
- The researcher is studying pain modulation and how certain drugs help control how bad we hurt.
What does modulated mean in physics?
Modulation in physics is the process of changing one or more properties of a periodic waveform, the carrier signal, with a modulating signal that typically contains information that is to be transmitted from one place to another.
What is modulation in electronic communication?
modulation, in electronics, technique for impressing information (voice, music, picture, or data) on a radio-frequency carrier wave by varying one or more characteristics of the wave in accordance with the intelligence signal.
What is modulation in analog communication?
Modulation is the process of changing the parameters of the carrier signal, in accordance with the instantaneous values of the modulating signal.
Why do we use modulated signal?
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.
Why do we modulate signals?
The signals within 20 Hz to 20 kHz frequency range can travel only a few distances. To send the message signal, the length of the antenna should be a quarter wavelength of the used frequency. Thus, modulation is required to increase the frequency of the message signal and to enhance its strength to reach the receiver.
What is meant by carrier signal?
In telecommunications, a carrier wave, carrier signal, or just carrier, is a waveform (usually sinusoidal) that is modulated (modified) with an information-bearing signal for the purpose of conveying information. The term is also used for an unmodulated emission in the absence of any modulating signal.
What is the function 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 modulation and its type?
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.
