measurement was performed at 30 stations via a single-station arrangement.
The averaged acoustic data recorded under headsets and overall noise exposure levels are reported in the Table 1 which lists the following characteristics: sound level during conversations, call durations, 8-h equivalent noise exposure due to communications, and overall daily exposure (communication plus ambient noise
, 8-h reference period).
Increases in global shipping and oil exploration have led to increased noise in the 20-1000 Hz bands; Ross (2005) estimated that ambient noise
levels have increased by 1/2 dB (re 1 [micro]Pa throughout unless otherwise stated) per year because of increases in anthropogenic noises, and McDonald et al.
A set of ambient noise
data was collected at off shores, Chennai using the vertical linear array of hydrophones deployed at various locations at 15m depth, off shores Chennai.
In 3 cases, the localization of the auditory danger signal of the overhead crane was tested when ambient noise
was simultaneously reproduced.
We present inversion procedure based on the computation of high-frequency correlation functions between stations of a small-scale array deployed for recording ambient noise
in Hurghada and Safaga cities.
"In residential areas, where ambient noise
level is lower later at night, noise disturbance from activities becomes more probable.
These include SoundSense speech recognition booster that blocks unwanted ambient noise
, and TouchConnect for immediate touch-pairing of a worker's wireless SRX2 headset to the device for fast start-up.
An Internal Noise Control (INC) feature safeguards against ambient noise
. Product includes an ultrasonic receiver, full-sized, heavy duty, noise-canceling headphones, a hollow air probe, a solid contact probe and an ultrasonic emitter that helps locate faulty seals, gaskets and weatherstripping in doors, windows, ductwork and other non-pressurized enclosures.
However, while 89% of headphone users turn up the volume to combat ambient noise
on the street, listeners should keep the volume where they can hear someone speak at a conversational level from three feet away; if you can't do that, the music is too loud.
Indeed a review by Konkani and Oakley reveals that ambient noise
levels in typical NICUs can exceed 80 dB SPL .
This option activates the noise cancellation microphone on the phone and filters out ambient noise
from affecting the call quality on both sides (caller and receiver).