The following words, terms and phrases, when used
in this chapter, shall have the meanings herein given, except where
the context clearly indicates a different meaning:
AMBIENT NOISE
The all encompassing noise associated with a given environment,
being usually a composite 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. The level so read is designated
dB(A).
CONSTRUCTION OPERATION
The erection, repair, renovation, demolition or removal of
any building or structure; and the excavation, filling, grading and
regulation of lots in connection therewith.
DECIBEL (dB)
A unit for measuring the sound pressure level, equal to 20
times the logarithm to the base 10 of the ratio of the pressure of
the sound measured to the reference pressure, which is 20 micropascals
(20 micronewtons per square meter).
EMERGENCY
Any occurrence or set of circumstances involving actual or
imminent physical trauma or property damage.
EMERGENCY WORK
Any work performed for the purpose of preventing or alleviating
the physical trauma or property damage threatened or caused by an
emergency.
IMPULSIVE SOUND
Sound of short duration, usually less than one second, with
an abrupt onset and rapid decay. Examples of impulsive sound include
explosions, drop forge impacts and the discharge of firearms.
NOISE
Any sound which annoys or disturbs humans or which causes
or tends to cause an adverse psychological or physiological effect
on humans.
NOISE DISTURBANCE
Any sound which:
(1)
Endangers or injures the safety or health of
humans or animals:
(2)
Annoys or disturbs a reasonable person of normal
sensitivities; or
(3)
Endangers or injures personal or real property.
PERSON
Any individual, association, partnership or corporation,
and includes any officer, employee, department, agency or instrumentality
of a state or any political subdivision of a state. Whenever used
in any clause prescribing and imposing a penalty, "person" includes
the individual members, partners, officers and managers, or any of
them, of partnerships and associations and as for corporations, the
officers and managers thereof or any of them.
POWERED MODEL VEHICLE
Any self-propelled airborne, waterborne or landborne plane,
vessel or vehicle which is not designed to carry persons, including
but not limited to any model airplane, boat, car or rocket.
PROPERTY LINE (BOUNDARY)
An imaginary line drawn through the points of contact and
adjoining lands, apartments, condominiums, townhouses and duplexes
owned, rented or leased by different persons; a demarcation or a line
of separation of properties, and also, for two or more buildings sharing
common grounds, the line drawn midway between any two such buildings.
All areas devoted to public rights-of-way shall be deemed to be across
the "property line." For the purpose of this definition, the "property
line" includes all points on a plane formed by projecting the property
line in a manner deemed appropriate by the enforcing police officer.
PUBLIC RIGHT-OF-WAY
Any street, avenue, boulevard, highway, sidewalk, alley or
similar place which is owned or controlled by a government entity.
PUBLIC SPACE
Any real property or structures thereon which are owned or
controlled by a governmental entity.
PURE TONE
Any sound which can be heard as a single pitch or a set of
single pitches. For the purpose of this chapter; a "pure tone" shall
exist if the 1/3 octave band sound pressure level in the band with
the tone exceeds the arithmetic average of the sound pressure levels
of the two contiguous octave bands by five dB for center frequencies
of 500 Hz and above and by eight dB for center frequencies between
160 Hz and 400 Hz and by 15 dB for center frequencies less than or
equal to 125 Hz.
REAL PROPERTY
All land whether publicly or privately owned, whether improved
or not improved, with or without structures, exclusive of any areas
devoted to public rights-of-way.
SOUND
An oscillation in pressure, particle displacement, particle
velocity or other physical parameter in a medium with internal forces
that causes compression and rarefaction of that medium, or the superposition
of such propogated oscillation which evokes an auditory sensation.
The description of "sound" may include any characteristics of such
sound, including duration, intensity and frequency.
SOUND LEVEL
The weighted sound pressure level obtained by the use of
a sound-level meter and frequency weighting network, such a A, B or
C, as specified in the American National Standards Institute specifications
for sound level meters (ANSI S1.4-1971, or the latest revision thereof).
If the frequency weighting employed is not indicated, the A-weighting
shall apply.
SOUND-LEVEL METER
An instrument which includes a microphone, amplifier, RMS
detector, integrator or time averager, output meter and any applicable
weighting network used to measure sound pressure levels, which meets
or exceeds the requirement for a Type I or Type II sound-level meter
as specified in ANSI Specification S1.4-1971. The manufacturer's published
indication of compliance with such specifications shall be prima facie
evidence of such compliance.