Spatial correlation of ambient noise
between pairs of hydrophones is obtained as a function of frequency .
Seismic apparatus Vistec--GAIA2T was used for two-day experimental measurement of ambient noise
The new Littmann model 3000 has been proven to reduce ambient noise
by an average of 75 per cent without filtering out critical body sounds, and offers amplification of up to 18 times greater than the best acoustic stethoscope.
The ocean is naturally noisy, which would seem to present problems for marine mammals using sound, however, they are well-adapted to natural levels of ambient noise
About the only drawback for this hotel is ambient noise
- a trade-off for convenience, perhaps.
the QuietCom earplug protects from high intensity ambient noise
, while permitting clear communication and improved speech intelligibility among members of Navy, Marine Corps and Air Force ground crews, a company spokesman said.
The 765HD comes with these additional standard features: computer controlled transmission; bottom tailwheel transition wear plates--replaceable abrasive resistant plate for increased boom life; personnel guard for covering the digging chain above, when crumber assembly not used; work lights--(12 volt) installed, two fore and two aft; and noise abatement--noise absorbing material at engine and deflecting panels reduce ambient noise
Another benefit is a reduction of how much ambient noise
the microphone picks up.
The Ambient Noise
Management System[TM], combined with specialized foam ear inserts, allows testing in any quiet examination room, without the need for a sound booth.
Also, although the Phraselator had the highest number of correct translations of the three units against ambient noise
, correct translations fell off markedly as phrases were tested against increased levels of pink and white noise.
When the ambient noise
is just as loud as the driver talking, speech recognition loses about 10% of the words; AVSR, 3%.
The various antiquated New York City codes do not adequately address the issue in that they do not provide a standard for the measurement of sound or vibration emanating from one apartment to another, but rather measure ambient noise
only, meaning outside noise vs.