ambient noise

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ambient noise

The total noise from all sources in a given environment.

See also: noise

References in periodicals archive ?

Even for the dispatcher with the lowest exposure through their headset (59.4 dBA), the ambient noise level in the call center contributed only to a minor extent to his overall daily noise exposure (61 dBA).

AUDITORY FATIGUE AMONG CALL DISPATCHERS WORKING WITH HEADSETS

The upper two data records were made in the environment with a 55 dB SPL ambient noise level. Note the attenuation of the wave forms in the nonplugged ear canal condition.

Contralateral ear occlusion for improving the reliability of otoacoustic emission screening tests

Thermostatically controlled cooling fans reduce the ambient noise level to comply with noise regulations.

New Dynapac tyre roller introduced

Results showed that acoustical material treatment such as absorptive ceiling tile and carpet did lower the ambient noise level (or the low-end) by just perceptible amounts; however, the peak levels (or high-end) did not vary greatly except in the neonatal intensive care unit (NICU), where other environmental controls have been instituted.

Measured levels of hospital noise before, during, and after renovation of a hospital wing, and a survey of resulting patient perception

Ambient noise level. Ambient noise levels for the selected locations were collected using the Leutron make noise level meter.

Performance of FHWA model for predicting traffic noise: a case study of Metropolitan City, Lucknow (India)/FHWA modelio taikymas transporto keliamo triuksmo lygiui prognozuoti ir vertinti (tyrimas Indijos Laknau mieste)

Initial data are: the geometry of domain, machine sound levels and positions and the ambient noise level. First a mesh of the area must be obtained.

Simulations based on noise maps for machinery location at workplace to help hazards prevention

In addition, each site had to have an ambient noise level that was equal to or less than the average level of "quiet" for residential intersections in that area.

Detecting approaching vehicles at streets with no traffic control

One of the biggest contributors to a classroom's ambient noise level has traditionally been a school's HVAC system, regardless of whether it is roof mounted or wall mounted.

Quieter heat pump

To ensure intelligibility and minimize annoyance from ambient noise levels, the voice signal at a conferencing microphone needs to be at least 25 dB sound pressure level above the ambient noise level.

Creating a technology-enhanced conference room

As well as logging each use, the software 'learns' from it, tailoring itself to each airport, for example remembering the ambient noise level at specific locations to provide the correct distress call broadcast volume.

Scarecrow Bio-Acoustic Systems break new ground in India

These processes all contribute to the ambient noise level from frequencies below 1 Hz to 50 kHz (NRC 2003).

Effects of anthropogenic noise on cetaceans: a review

In addition, the PCs operate at 14dB(A) quieter than other desktop PCs and below the ambient noise level of a classroom.