reference level

reference level

[′ref·rəns ‚lev·əl]
(engineering)
(engineering acoustics)
The level used as a basis of comparison when designating the level of an audio-frequency signal in decibels or volume units. Also known as reference signal level.
(oceanography)
Level of no motion.
A level for which current is known; allows determination of absolute current from relative current.
References in periodicals archive ?
Only facility A employees were found to have blood lead levels above the CDC reference level of 5 [micro]g/dL.
The mean annual effective doses of 30 samples are lower, 1 of them is equal and 1 is greater than the reference level of 0.1 mSv a-1 for drinking water of WHO and EU Council.
The move is expected to cap the interbank ROBOR interest rates at a reference level of 1.50 percent.
This note assesses the factor structure method for capturing variations in a large number of economic indicators and the use of the resulting factors to model the agent reference level in preferences.
"The carrier level in traditional AM broadcasting is constant, and is used as the reference level to determine the modulation of audio being broadcast," said Mark Grant , CEO of Belar Electronics.
"Moderate and low risk areas will have a lower proportion of homes above the indoor radon national reference level.
In general, it is seen that the AED limit was within the recommended reference level (3 mSv/y to 10 mSv/y) of the World Health Organization.
One month after surgery, prolactin level was only slightly elevated (48.1 [micro]g/l, reference level: 2.2-30.3 [micro]g/l) without any complains of galactorrhea.
The CBE moved the reference level from EGP 8.78 against the US dollar to EGP 13.05 and allowed a 10% band around this level ahead of the $100m foreign exchange auction on Thursday.
This article will look at the reasons for the revised reference level, the laboratory experience since the policy shift, how labs test and guard against contamination, and why lead will continue to be a public health problem long after the crisis in Flint is resolved.
The instrument is the industry's first handheld spectrum analyzer to offer a large format capacitive touchscreen that enables lab users to easily and intuitively adjust settings such as frequency, span and reference level and to set markers.
Single GSM exposure limit for electric field is 1/4 of total GSM exposure limit of BTK and ICNIRP reference level. Also, single GSM exposure limit for power density is 1/16 of total GSM exposure limit as given in Table 2.

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