amplitude-modulation

listen to the pronunciation of amplitude-modulation
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A method of sending information by modifying (modulating) the intensity (amplitude) of a carrier wave
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A modulation method in which the amplitude of one wave (the carrier) is controlled by the amplitude of another wave (the modulator) Unlike Ring Modulation, Amplitude Modulation uses a modulator that is unipolar (i e , always positive) In SFX Machine, the AM modulator is automatically converted to a unipolar signal Low-frequency AM results in volume control or tremolo effects Modulator frequencies that are themselves in the audio range result in sum and difference sideband tones that were not necessarily present in either the carrier or the modulator
A change of the amplitude of the carrier wave in analog data transmission to represent either the 0 bit or 1 bit
(AM) One of three basic ways to add information to a sine wave signal; the magnitude of the sine wave, or carrier, is modified in accordance with the information to be transmitted
(AM) - a modulation technique in which the transmitted radio wave (or more specifically the amplitude of the carrier wave) is varied in accordance with the audio signal being broadcast, distinguished from frequency modulation (FM)
A method of transmitting information by varying the strength of a carrier waveform in accordance with the instantaneous value of the intelligence-bearing signal
One of three basic methods (see also Frequency and Phase Modulation) of adding information to a sine wave signal in which the magnitude of the signal is varied to impose information on it
A form of carrier wave modulation in which the amplitude of the carrier wave is varied in proportion to the amplitude of the modulating wave See also modulation
A type of modulation in which the amplitude of the carrier wave is varied above and below its normal value by an amount proportional to the amplitude of the impressed wave
One of the methods for transmitting information using radio waves by superimposing the information signal onto a radio frequency carrier wave The amplitude of the carrier wave is varied in accordance with the time-varying amplitude of the input signal The frequency of the carrier wave remains unchanged
A technique whereby the voltage level or amplitude of a carrier is varied in order to transmit digital or analog information
One of three basic methods (see Frequency and Phase Modulation) of adding information to a sine wave signal in which the magnitude of the signal is varied to transmit information
(AM) The varying of the amplitude of a signal, usually repetitively For signals of audible frequency, amplitude modulations in the range of 1 Hz to ~15 Hz evoke a tremolo effect
Representation of data or signal states by the amplitude of a fixed frequency sinusoidal carrier wave Where data is in binary form the modulation involves two levels of amplitude and is referred to as Amplitude Shift Keying (ASK)
Amplitude is the distance between the peaks and troughs of a waveform and its average value Amplitude modulation is the process of representing information by alternating and controlling the amplitude
A modulation technique where the amplitude of the carrier signal is changed by the amplitude of the information signal
A form of modulation in which the amplitude of a carrier wave is varied in accordance with some characteristic of the modulating signal
Where audio signals increase and decrease the amplitude of the "carrier wave"
A transmission technique that inserts information onto an electrical carrier wave by varying the amplitude of the carrier
A method of impressing a message upon a carrier signal by causing the carrier amplitude to vary proportionally to the message waveform
The process whereby the amplitude of one electrical quantity is varied in accordance with some selected characteristic of a second quantity, not necessarily electrical (for example, in microwave voice communications, a wave oscillating at the relatively low frequency of sound would be used to vary the amplitude of a continuous high-frequency transmitted carrier wave)
Amplitude Modulation (AM) is a method of transmission whereby the amplitude of the carrier frequency is modified in accordance with the bit value of the intelligence signal
A means of adding voice or data to a radio frequency transmission by varying the amplitude of the carrier frequency Broadcast stations in the "AM" band on a car radio use this modulation technique AM is susceptible to static from electrical sources such as atmospheric noise, thunderstorms and electrical appliances
A transmission technique in which the amplitude of the carrier is varied in accordance with the signal A means of signal transmission whereby transmitter (light source) signal intensity is varied in relation to the amplitude of the input signal
modulation of the amplitude of the (radio) carrier wave
  Modulation in which the amplitude of a carrier wave is varied in accordance with some characteristic of the modulating signal   (188) Note:   Amplitude modulation implies the modulation of a coherent carrier wave by mixing it in a nonlinear device with the modulating signal to produce discrete upper and lower sidebands, which are the sum and difference frequencies of the carrier and signal   The envelope of the resultant modulated wave is an analog of the modulating signal   The instantaneous value of the resultant modulated wave is the vector sum of the corresponding instantaneous values of the carrier wave, upper sideband, and lower sideband   Recovery of the modulating signal may be by direct detection or by heterodyning
amplitude-modulation
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