amplitude modulation
1
5.3
- noun
- /ˈæmplɪˌtud ˌmɒdʒʊˈleɪʃən/
- Specialized
:
modulación de amplitud
- The radio station uses amplitude modulation to ensure clear transmission of music and speech over long distances.
Examples
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So our focus on in today's lecture will be on sinusoidal amplitude modulation in continuous time.
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This coil transmits the signal using amplitude modulation (standard AM radio waves) that goes to a computer chip implanted behind the ear.
Academic text (2003) -
In the previous section, the amplitude-modulation capability of the modulator was described.
Academic text (1997) -
The amplitude-modulation approach has now been applied to other higher-speed and higher-resolution IBM printers.
Academic text (1997) -
For this reason, amplitude modulation was selected by IBM as the best choice to implement PQE.
Academic text (1997) -
The lack of amplitude modulation was addressed by replacing the existing digital data path to the printhead with an analog path.
Academic text (1997) -
Amplitude modulation compared with pulse-width modulation
Academic text (1997) -
Thus, AOMs have amplitude-modulation characteristics suitable for PQE when they are driven by appropriate AOM drivers.
Academic text (1997) -
The observed signal must exhibit amplitude modulation and Doppler frequency modulation consistent with the effects of the Earth's rotation and revolution around the Sun.
Academic text (1999) -
PQE requires "partial" pel exposures, which can be produced with either pulse-width modulation or amplitude modulation of the laser beam.
Academic text (1997)
Synonyms
4
6.3
A way of sending sound on radio by changing the strength of the signal
How Modulated
Surface Forms
Morphology
The term is transparently compositional: 'modulation' means changing a signal property and 'amplitude' names the wave height, so 'amplitude modulation' straightforwardly means modulating the amplitude to transmit a signal. This predictable noun-noun technical compound follows cross-linguistic patterns and would be understandable to learners who know both constituent words.
Etymology
Amplitude modulation comes from a simple picture of a steady radio wave whose height, the amplitude, is turned up and down. Imagine the wave getting taller for louder parts and smaller for quiet parts so those changes carry the message. That's why the phrase means 'sending information by changing a wave's strength'.