<aside> 📎 A linear distortion is defined as a change in amplitude or phase with no new frequencies added.
</aside>
The term "linear distortion" refers primarily to irregularities of the frequency response. Our listening range from 20 Hz to 20 kHz is considered the basis of observation. Almost all real systems have more or less strong linear distortions of the amplitude frequency response.
Especially the edge areas are often affected by such disturbances. Most often, the amplitude response falls slightly at the upper and lower end. An exception may be tape machines where the amplitude frequency response increases towards the highs.
<aside> 📎 A non-linear distortion occurs when new frequency components are generated. Non-linear distortions are what is usually meant by "distortion".
</aside>
Nonlinear distortions are distortions of the transmitted waveform. They show up as 'deformation' of the waveform at the input.
UNDISTORTED SIGNAL
LINEAR DISTORTED SIGNAL
NONLINEAR DISTORTED SIGNAL
Nonlinear-Distorted-Signal.mp3
Non-linear distortions are further divided into harmonic or non-harmonic distortion
<aside> 📎 In harmonic distortion, all integer multiples of the fundamental frequency are considered.
</aside>
