Amplitude distortion: Distortion occurring in a system, subsystem, or device when the output amplitude is not a linear function of the input amplitude under specified conditions.
Amplitude distortion is measured with the system operating under steady-state conditions with a sinusoidal input signal. When other frequencies are present, the term "amplitude" refers to that of the fundamental only.
The Mercator projection in cartography, for example, distorts Greenland because of its high latitude, in the sense that its shape is not that on a globe.
In start-stop teletypewriter signaling, distortion is the shifting of the significant instants of the signal pulses from their proper positions relative to the beginning of the start pulse.
The magnitude of the distortion is expressed in percent of an ideal unit pulse length.
distortion, in electronics, undesired change in an electric signal waveform as it passes from the input to the output of some system or device.
Amplitudedistortion occurs when this factor is not the same for all input voltages.
Frequency distortion occurs when the amplitudes of the different frequency components of an input signal are changed by a factor that is not the same for all frequencies.
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