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 twenty (20)
times the logarithm to the base 10 of the ratio of the pressure of the sound
measured to the reference pressure, which is twenty (20) micropascals [twenty
(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 (1) 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.
(3)
Endangers or injures personal or real property.
(4)
Is in excess of the sound levels by zoning districts established in §
161-5.
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.
PUBLIC RIGHT-OF-WAY
Any street, avenue, boulevard, highway, sidewalk, alley or similar
place which is owned or controlled by a governmental 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
one-third-octave band sound pressure level in the band with the tone exceeds
the arithmetic average of the sound-pressure levels of the two (2) contiguous
octave bands by five (5) dB for center frequencies of five hundred (500) hertz
and above and by eight (8) dB for center frequencies between one hundred sixty
(160) and four hundred (400) hertz and by fifteen (15) dB for center frequencies
less than or equal to one hundred twenty-five (125) hertz.
PROPERTY LINE (BOUNDARY)
An imaginary line drawn through the points of contact of 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 any two (2) or more buildings sharing common grounds, the line
drawn midway between any two (2) 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.
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 rarefraction of that medium, or the superposition of such
propagated 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 as 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
sl.4-1971. The manufacturer's published indication of compliance with such
specifications shall be prima facie evidence of such compliance.
ZONING DISTRICTS
The land use districts established by Chapter
224, Zoning, and all subsequent amendments.