background signal

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Noun1.background signal - extraneous signals that can be confused with the phenomenon to be observed or measuredbackground signal - extraneous signals that can be confused with the phenomenon to be observed or measured; "they got a bad connection and could hardly hear one another over the background signals"
interference, noise, disturbance - electrical or acoustic activity that can disturb communication
background noise, ground noise - extraneous noise contaminating sound measurements that cannot be separated from the desired signal
background radiation - radiation coming from sources other than those being observed
References in periodicals archive ?
Although the tissues are not nearly as effective at generating a signal as the contrast agent, the quantity of the tissue is much greater than the quantity of the contrast agent and so the background signal is very high," said lead author Xiaohu Gao, a UW assistant professor of bioengineering.
These kits, optimized for inhibitor screening, contain high-performance fluorogenic substrates which exhibit high reactivity and low background signal.
The average signal detected from the animals treated with venom was significantly above the background signal detected from the saline treatment for up to 21 days after the initial treatment (Figure 2, 3, and 4).
It is demonstrated that the developed CTFOB dip-probe is a highly specific detector as the signal from the non specific protein was not more than the background signal.
Because the human body contains no naturally occurring magnetic materials visible to MPI, there is no background signal.
In addition to stability, an ideal performance qualification tool should mimic a microarray with similar spot sizes, resolution, concentrations, and background signal intensity.
First the background signal is determined, and based on this value a 5-SD threshold above background is created.
Each A-scan is recorded containing reflection signals above a preset threshold, relative to the background signal.
A large background signal originates from the emission of many chromophores in the far-field illuminated volume.
The SynchroMaster555 uses chroma keying (mixing signals via a chosen colour, usually blue or green) to bring the background signal through the foreground, and either channel can be configured as fore- or background.
The stability level of the background signal can be estimated by Figure 1B, which shows the recording of the photodetector indication at the inactive radiation source.
For simplicity, the tests were conducted in solution that inherently caused an increase in background signal due to random chance interactions between free-floating complexes.