The absolute value of the maximum displacement from a zero value during one period of an oscillation The maximum deviation of an alternating current from its average value during its cycle
The maximum value of the electromagnetic wave, measured from the mean to the extreme; put simply, the height of the wave (See drawing under POLARIZATION )
The level or strength of a signal (e g , A high-powered amplifier will raise the amplitude of your decks signal to over 50 volts )
The arc of the horizon between the true east or west point and the foot of the vertical circle passing through any star or object
greatness of magnitude the property of copious abundance (physics) the maximum displacement of a periodic wave
The arc of the horizon between the true east or west point and the center of the sun, or a star, at its rising or setting
For a wave or vibration, the maximum displacement on either side of the equilibrium (midpoint) position
An angle upon which the value of some function depends; a term used more especially in connection with elliptic functions
Amplitude refers to the relative height of a waveform A sound's loudness is a function of its amplitude
The magnitude of the displacement of a wave from a mean value For a simple harmonic wave, it is the maximum displacement from the mean For more complex wave motion, amplitude is usually taken as one-half of the mean distance (or difference) between maxima and minima
The height of a wave The difference between the center of gravity of the wave and the highest (or lowest) point on the wave
the strength or "loudness" of the seismic signal at any time The amplitude of a reflection event is taken to be proportional to the reflection coefficient at the boundary, although the seismic wavelet and tuning phenomenon may corrupt this relationship Since reflection coefficients can be negative or positive, seismologists speak of both negative and positive amplitudes
At the rising, the amplitude is eastern or ortive: at the setting, it is western, occiduous, or occasive
the height, or degree of execution of a movement In general, the higher the salto or the more breathtaking the movement, the better the amplitude and the score
The relative value of a signal, its volume or magnitude The height of its waveform
The amount of a signal Amplitude is measured by determining the amount of fluctuation in air pressure (of a sound), voltage (of an electrical signal), or numerical data (in a digital application) When the signal is in the audio range, amplitude is perceived as loudness
The variation in a sound signal producing varying levels of loudness Measured in decibels (dB)
The horizontal line which measures the distance to which a projectile is thrown; the range
The instantaneous magnitude of an oscillating quantity such as sound pressure The peak amplitude is the maximum value
In physics, the amplitude of a sound wave or electrical signal is its strength. the distance between the middle and the top or bottom of a wave such as a sound wave (amplitudo, from amplus; AMPLE)
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
(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
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
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 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