ambient noise

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ambient noise

n
the level of the total noise in an area
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She pointed out that the tones shall be at least two decibels and no more than five decibels greater than the ambient noise level, must be sensitive to level changes, and must be audible to the mid-point of the crossings.
The measure also proposed that a distinct sound for the North/South clearance phase be used and another distinct sound for the East/West clearance phase, noting that the tones shall at least be two decibels and no more five decibels greater than the ambient noise level.
When measuring the conducted noise spectrum of a powered device being tested in an unshielded setup, conducted noise to be measured is often hidden below the ambient noise level, making accurate measurements impossible without eliminating the interference.
The average ambient noise level in the first half was 98dB and 96dB for the second half.
Indeed, operators were free to adjust the volume delivered through their headsets to compensate the variability of the acoustic quality receptions or the ambient noise level in the open space.
"The loudspeaker installed in public places cannot have sound level more than 10 dB above ambient noise level at the periphery of a public place and 5 dB above ambient noise level at the periphery of a private place.
When compared to noise sources such as ship, rain, biological and human activities underwater ambient noise level is dominated by wind for a significant range of frequency [2].
The challenge of localizing vehicle backup alarms: Effects of passive and electronic hearing protectors, ambient noise level, and backup alarm spectral content.
A mere 40 percent of workers agree that they feel relaxed and calm at work, well below the global average of 59 percent, and only 46 percent stated that they were satisfied with the ambient noise level, in comparison to 63 percent globally.
"In residential areas, where ambient noise level is lower later at night, noise disturbance from activities becomes more probable.
(ii) Experiments were also made in the open laboratory environment, where ambient noise level was approximately 45 dB SPL.
Depending on the given ambient noise level (decibel), the company recommends the use of special glazing, composite or box- type windows as well as computing the relevant cost.

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