background level


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  • noun

Synonyms for background level

the amplitude level of the undesired background noise

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References in periodicals archive ?
That is the point when we do the surveys, we catch it before it gets above those background levels.
How will performance be affected by possible background levels of illicit substances found on "clean" mail?
Environmental Protection Agency (EPA) have been unable to reach an agreement on the background level of radiation that can remain when the site is released for other uses," says Senator Sharon Treat.
That's because any excess helium can eventually permeate the O-rings on your vacuum system and contribute a background level that may be high enough to mask the leaks you're seeking.
Scientists use the word epidemic to describe a cluster of incidents greater than the normal background level of cases.
As a result, cleanup to the background level is far more expensive than cleanup to a risk standard, although it may not result in any measurable environmental or health improvement.
In general, it proved to be true that after a certain period of starvation, the background level became low while the sensitivity of the assay was still high.
Figure 2 Incomplete Worksheet Positive factors Negative factors Sound transmission class -- Normal voice 62 (STC) Background level NC -- Voice correction -- Wall STC correction -- STC reduction -- Background correction -- Total -- Total --
How do we know what the natural background level is?
Make sure that both of these objects are placed in the background level.
html) USGS alert system for volcanic activity, for the last two years Mauna Loa has been raised from a normal, non-eruptive level to an "advisory" level, in which the volcano "is exhibiting signs of elevated unrest above [the] known background level.
As it circles over the Columbia River, it takes a reading of the Earth's natural radiation and sets its instruments to that background level.
We need some sort of background level of QE to see us through this period, particularly while FLS has its full impact for the remainder of this year," he told a newspaper.
Despite increasingly stringent controls on our use of antibiotics, the background level of antibiotic resistant genes, which are markers for potential resistance, continues to rise in soils.
Mr Lines added: "A very low background level of cryptosporidium is normally present in the water.
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