1. The following words, terms and phrases when used in this Part shall have the meaning ascribed to them in this Section, except where the context clearly indicates a different meaning. All terminology used in this Part, not defined below, shall be in conformance with the applicable publications of the American National Standards Institute (ANSI 51.1 - 1950 (R1971) and its revisions) or its successor body:
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).
Ambient noise - the all encompassing noise associated with a given environ ment, being usually a composite of sounds from many sources near and far.
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 1 second, with an abrupt onset and rapid decay. Examples of impulsive sound include explosions, drop force impacts, and the discharge of firearms.
Muffler or sound dissipative device - a device designed or used for decreasing or abating the level of sound escaping from an engine or machinery system.
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, or (2) annoys or disturbs a reasonable person of normal sensitivities, or (3) endangers or injures personal or real property, or (4) is in excess of the sound levels.
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, or partnerships and associations, and as to 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 Part, 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 continuous octave bands by 5dB for center frequencies of 500 Hz and above and by 8 dB for center frequencies between 160 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 right-of-way.
Sound - an oscillation in pressure, particle displacement, particle velocity or other physical parameter, in a medium with internal forces that causes compres sion and rarefaction of that medium. The description of sound may include any characteristics or 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 American National Standards Institution specifications for sound level meters (ANSI 51.4-1974, or the latest revision thereof). If the frequency weighting employed is not indicated, the A-weighting shall apply.
Sound level meter - a 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 Specifications 51.4-1974. The manufacturer's published indication of compliance with such specifications shall be prima facie evidence of such compliance.
Zoning Districts - means the land use districts established by the Zoning Ordinance of the Township of Dover [Chapter 27] and all subsequent amendments.
(Ord. 91-1, 9/9/1991, § 16.54)