Unless otherwise indicated by context, the following
terms and phrases shall mean:
AIR COMPRESSOR
A device which draws in air or gas, compresses it and delivers
it at a higher pressure.
AIR-CONDITIONING AND AIR-HANDLING DEVICE
Any device that is designed to be used or is actually used
to cool, move or condition air, including but not limited to air conditioners,
cooling towers, fans and blowers.
AMBIENT NOISE
The all-encompassing noise associated with a given environment,
being usually a composit of sounds from many sources, near and far.
A-WEIGHTED SOUND LEVEL
The sound-pressure level in decibels as measured on a sound
level meter using the A-weighting network and designated as db(A).
CONSTRUCTION
Any activity necessary or incidential to the erection, demolition,
assembling, altering, installing or equipping of buildings, public
or private highways, roads, premises, parks, utility lines or other
property, including but not limited to related activities such as
land clearing, grading, earthmoving, excavating, blasting, filling
and landscaping.
CONSTRUCTION SITE
Any location, including land and water, where construction
takes place.
DECIBEL (db)
A unit for measuring the pressure level of a sound. For the
purpose of this article, the standard reference pressure stated herein
will be used to assure a consistent and standard reference for measuring
sound. The sound pressure level measured in decibels is equal to 20
times the logarithm to the base ten of the ratio of the effective
pressure of the sound measured to the reference pressure, such.reference
pressure being 20 micropascals (20 micronewtons per square meter).
This is equivalent to 20 log10 PRMS 20 Micro-N/M2.
DEVICE
Any machine, mechanism or equipment which is intended to
or which actually produces sound or vibrations.
DISCRETE TONE
A sound wave whose instantaneous sound pressure varies essentially
as a simple sinusoidal function of time (American National Standards
Institute terminology).
EMERGENCY OPERATION
The operation or parking of an authorized emergency vehicle
when such vehicle is engaged in transporting a sick or injured person,
responding to or working or assisting at the scene of an accident,
disaster, police call, alarm of fire or any emergency.
EXHAUST SYSTEM
A system which removes and transports air or gas from a device.
FREQUENCY
A function periodic in time which is the reciprocal of the
period.
IMPULSIVE SOUND
A sound of short duration, usually less than one second and
of high intensity, with an abrupt onset and rapid decay (American
National Standards Institute terminology). (Examples include an explosion
or discharge of a firearm.)
L10
The A-weighted sound level measured with slow response that
is exceeded 10% of the time in any one-hour interval. The measurement
time interval need not be one hour, provided that the measurement
results are representative of a one-hour interval.
L90
The A-weighted sound level measured with slow response that
is exceeded 90% of the time in any one-hour interval. The measurement
time interval need not be one hour, provided that the measurement
results are representative of a one-hour interval.
MAXIMUM GROSS WEIGHT
The weight of the vehicle unladen, plus the weight of the
maximum load to be carried by such vehicle during the registration
period or the maximum gross weight for which the vehicle is registered,
whichever is greater.
MOTOR VEHICLE
Every vehicle operated or driven upon a public highway, which
is propelled by any power other than muscular power.
MUFFLER
A device for abating the sound of escaping gases of an internal
combustion engine or other sound source.
NOISE-SENSITIVE ZONE
An area adjacent to a site, including but not limited to
any authorized school, church, house of worship, senior citizen center,
day-care center, hospital or nursing home which requires specific
noise limitations.
PAVING BREAKER
Any powered construction device that is designed to be used
or is actually used to cut or trench pavement subbase, macadam, gravel,
concrete or hard ground.
PERSON
Includes the singular and plural and also any natural person,
firm, corporation, political subdivision, government agency, association,
club, partnership, society or any other form of association or organization
or any legal entity whatsoever.
PUBLIC HIGHWAY
Any highway, road, street, avenue, public place, public driveway
or any other public way.
RECREATIONAL MOTOR VEHICLE
Any vehicle which is propelled by any power other than muscular
power that is designed for or capable of cross-country travel, such
as a motorcycle, trail bike or minibike. A recreational vehicle is
also classed as a motor vehicle when such recreational vehicle is
operated or driven upon a public highway. A snowmobile is any self-propelled
vehicle designed for travel on snow or ice. Lawn mowers, powered garden
vehicles and other similar utilitarian domestic vehicles are specifically
excepted therefrom.
SOUND
An oscillation in pressure, stress, particle displacement
or other physical parameter in a medium with internal forces (American
National Standards Institute terminology).
SOUND LEVEL
The weighted pressure level, measured by the use of a metering
characteristic and the weighing A, B and C (American National Standards
Institute terminology). For purposes of enforcing and interpreting
the provisions of this article, unless a different frequency weighting
is indicated, the A-weighting slow response shall apply.
SOUND LEVEL METER
An instrument, including a microphone, an amplifier, an output
meter and frequency-weighting networks for the measurement of sound
levels (American National Standards Institute terminology).
SOUND-REPRODUCTION DEVICE
Any device that is designed to be used or is actually used
for the production or reproduction of sound, including but not limited
to any musical instrument, radio, television, tape recorder, phonograph
or any other sound-amplifying equipment.
SOUND TRUCK
Any vehicle having mounted thereon or attached thereto sound-amplifying
equipment.
ZONING DISTRICT
Any zone as defined in the- Zoning Ordinance of the Incorporated
Village of Freeport.