here, [L.sub.p1] and [L.sub.p2]--sound pressure levels in 1/3 octave bands respectively while measuring the noise level in open space and when the noise barrier is used to suppress the level of noise coming out of the noise source
identification implies to obtain the position and frequency of the dominant noise sources
Many of these complaints resulted in enforcement action being taken against the owner/operator of the noise source
. A proactive approach to addressing these common noise issues would be a much preferred path rather than a regulatory reaction which may involve the imposition of penalties and the costs of corrective actions on trash haulers, landowners, and construction companies.
Whether the noise source
is in the caller's environment, or coming in over the cellular networks from the other end of the call, the Voice Processor instantaneously reduces multiple noise sources
, such as airport PA systems, restaurant noise, car noise and street noise.
It had been determined that chain-sprocket meshing noise was the most significant noise source
. So the team worked to analytically predict chain drive system resonance, as they assumed that the existence of chain resonances can amplify radiated chain meshing noise.
What is the name for the apparent change in pitch of a moving noise source
as perceived by the listener?
The 5427 is a military noise source
for the third millennium.
Transportation noise is perhaps the most pervasive noise source
and the most difficult to avoid in society today.
"Students often live in accommodation that was originally designed for families and for individuals living separately - each creating their own noise source
," said Joy Swithenbank, environmental health officer.
The noise source
, in this case, is the equipment that is producing the noise level, often from mechanical operations.
In a highly reverberant (acoustically reflective) room, even a small noise source
can cause a high noise level because of repeated reflections.
Product noise performance standards were never promulgated for noise source
categories that affect the greatest number of people.