The total random noise that comes from an electronic system without any other source of sound.

See: Dynamical Noise

Measure of the amount of noise seen by an analog circuit or an ADC when the analog inputs are grounded.

A measure of residual noise of a circuit that is not related to the input.

Refers to the random energy generated by thermal and shot effects in the system. It is specified in terms of it rms level as measures in a 4 MHz bandwidth centred within a 6 MHz cable television channel.

Undesirable signals generated by electronic circuitry. System noise includes photon noise, preamplifier noise, and dark current noise.

In a CCD camera system, internally generated interference or a number of other factors can cause unwanted signal to appear in an image. Many noise sources exist, but three sources account for the majority of total system noise: dark noise, photon (shot) noise, and read noise.