Definitions. All acoustical terminology shall be that
contained in ANSI S1.1 "Acoustical Terminology."
APPLIANCE
Any device or combination of devices used or capable of being
used as a means of accomplishing a desired end, such as a window air-conditioning
unit.
CODE ENFORCEMENT OFFICER
Any person appointed by the Borough of Pen Argyl with responsibility
to enforce municipal ordinances or any sworn member of the Borough
of Pen Argyl Police Department.
DAY
The twenty-four-hour period starting at local 12:00 midnight.
DECIBEL (dB)
A unit of sound level which is a division of logarithmic
scale used to express the ratio of the sound intensity of the source
to the intensity of an arbitrarily chosen reference intensity. The
ratio is expressed on the decibel scale by multiplying its "base 10
logarithm" by 10.
EQUIPMENT
Any devices or combination of devices to accomplish a desired
end, such as a chain saw, bulldozer, etc.
EXCESSIVE NOISE
That sound which is:
(1)
Injurious or which unreasonably interferes with
the comfortable enjoyment of life and property. Measured noise levels
in excess of limits established in these regulations or those specified
in valid permits are declared to be excessive noise.
(2)
Annoying to a person of ordinary sensibilities.
IMPULSIVE NOISE
Characterized by brief excursions of sound level. The duration
of a single impulse is usually less than one second.
INTERMITTENT NOISE
A noise whose sound level exceeds the ambient noise levels
at least twice during the period of observation, which is one minute
or more. The period of time during which the level of the noise remains
at an essentially constant value different from that of the ambient
is on the order of one second or more.
NOISE
Any sound emitted by a person, animal, vehicle, appliance,
equipment or other device and its environmental interaction.
PERIOD OF OBSERVATION
The time interval during which acoustical data are obtained.
The period of observation is determined by the characteristics of
the noise being measured and the instrumentation being used. The period
of observation must be at least as long as the response time of the
instrumentation. The greater the variance in individual sound level,
the longer must be the observation time for a given expected accuracy
of measurement.
PERSON
Either the owner or operator of vehicles, appliances, equipment
or devices, or any individual, whether adult or minor.
S.A.E
Society of Automotive Engineers.
SOUND LEVEL METER
A sound level meter is an instrument, or combination of instruments,
for measuring sound. For purposes of this section, this term shall
specifically apply to the Radio Shack digital sound level meter, or
comparable meter.
SOUND LEVEL (NOISE LEVEL)
Airborne sound levels are expressed in dB and obtained by
the use of specific frequency dependent weighting networks, as specified
in the referenced standards. The specific weighting network used must
be indicated by the proper notation. If the A-weighting is employed,
the sound level is identified as dB(A).
STEADY NOISE
A noise whose level remains essentially constant (i.e., fluctuations
are less than five dB) during the period of observation is a steady
noise.
VEHICLE
Any device, or combination of devices, used for or capable
of being used for transporting persons or property. Vehicles include,
but are not limited to, the following: automobiles, trucks, buses,
motorcycles, motorized bicycles, snowmobiles, scooters, all-terrain
vehicles, go-carts, racers and like devices, farm machinery, industrial
machinery, highway graders, trailers, graders and semitrailers.