noise level


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noise level

[′nȯiz ‚lev·əl]
(physics)
The intensity of unwanted sound, or the magnitude of unwanted currents or voltages, averaged over a specified frequency range and time interval, and weighted with frequency in a specified manner; usually expressed in decibels relative to a specified reference.

sound level

The reading of a sound-level meter, using one of the three weighting networks; expressed in decibels (abbr. dB); the weighting network used must be specified; the most widely used network for noise measurements is the A-network.
References in periodicals archive ?
To better understand roadway and aviation transportation noise levels and their potential effects, USDOT's Bureau of Transportation Statistics (BTS), with assistance from a team of researchers at Volpe, recently released the National Transportation Noise Map.
Noise level measurements were collected during one week (Monday through Sunday) in all shifts (morning, afternoon and night).
Wherever there is high noise levels at work you should be looking for alternative processes, equipment and/or working methods to reduce noise levels and exposure times.
Minimum noise level show the minimum sound level recorded during whole measurement, it means that minimum sound level could be described as sound level without traffic noise.
The following is the OSHA standards limit for the noise level exposure limits (Permissible Exposure Limit).
The majority is also satisfied with the noise level.
This paper proposes a noise level estimation method based on histogram modification in a correlated color space.
This diagram has many applications in noise emission models such as annual noise level calculation in urban areas, Makarewicz [6].
2013) In the frame of the PERS project realized in Sweden and in Japan the investigation on reduction of noise level through the use of poroelastic road surfaces was conducted (Fujiwara et at.
Earlier the Noise level in various busy traffic junctions of Kurnool city was measured with a sound level meter.
31 seconds, and the lowest achievable ambient background noise level in the space is 37dBA.
Delhi records highest noise level out of 7metros surveyed by CPCB