Amplitudestøy
Amplitudestøy, also known as amplitude noise or sometimes signal noise, refers to unwanted random fluctuations in the amplitude of a signal. This type of noise is present in virtually all electronic and communication systems, affecting the fidelity and integrity of transmitted or processed information. It arises from various sources, including thermal noise (Johnson-Nyquist noise) generated by the random motion of charge carriers in resistors, shot noise resulting from the discrete nature of charge carriers, and interference from external electromagnetic sources.
The presence of amplitudestøy can manifest as a distortion or degradation of the original signal. For instance,