The close-talk utterances were played through a head and torso simulator (HATS) located in the driver seat (95th percentile male seating position) while the background road noise was recreated in the vehicle according to the ITU (International Telecommunications Union) protocol defined in  for the simulation of recorded vehicle background noise
in the car cabin.
The system is used to measure background noise
from high-energy neutrons, allowing researchers to account for interference in measurements when monitoring nuclear reactors.
Having a directional microphone also can help, because it picks up sounds closer to you more clearly than background noise
A new study has found that the presence of background noise
in the home or at school makes it more difficult for toddlers to learn new words.
Many sufferers find that background noise
, such as playing music, reduces their awareness of the sounds in their ears.
This allows engineers to hear how things sound without any background noise
An early indicator can be when you're in a group situation and there's background noise
, so you miss parts of conversations, or find it harder than it used to be to hear," says Audiologist Sharmila Patel.
Our NEW approach In addition to the standard hearing assessment we also carry out the revolutionary Speech-in-Noise (QUICKSIN) test that shows how well you can hear in the presence of background noise
and provides an indication of the likely benefit you will derive from a hearing aid.
For Method I (direct assessment with task), five levels of two tonal frequencies (125 Hz and 500 Hz) were tested above two different background noise
levels (40 dBA and 55 dBA, with spectra roughly following RC contours of RC-25 and RC-40 respectively) for a total of 20 test signals.
It quickly analyzes speech and removes most of the background noise
Wang said that for 50 years, researchers have tried to pull out the speech from the background noise
, asserting that hasn't worked, so they decided to try a very different approach: classify the noisy speech and retain only the parts where speech dominates the noise.
Heasley said background noise
, which can be anything from the wind, chatter or trees rustling, can interfere with the signals that determine a miner's exact location.