All terminology used in this chapter shall be consistent with applicable American National Standards Institute Publications, such as S1.1 1960 ® 1971 or S1.13 1971 or those from its successor publications or bodies. For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
A-WEIGHED SOUND PRESSURE LEVEL. The sound pressure level meter using the A-weighted network. The standard notation is dB (A).
AMBIENT NOISE LEVEL. The sound pressure level of all encompassing noise associated with a given environment, being usually a composite of sounds from many sources. It is also the sound pressure level exceeded 90% of the time based on a one-hour sample.
COMMERCIAL DISTRICT. This term means the following:
(1) An area where offices, clinics and the facilities needed to serve them are located;
(2) An area with local shopping and service establishments;
(3) A tourist-oriented area where hotels, motels, and gasoline stations are located;
(4) A business strip along a main street containing offices, retail businesses, or commercial enterprises;
(5) Other commercial enterprises and activities which do not involve the manufacturing, processing or fabrication of any commodity.
COMMERCIAL DISTRICT shall include, but not limited to any parcel of land zoned as commercial or highway commercial as provided by the zoning ordinance of the village.
CONSTRUCTION ACTIVITIES. Any and all activity incidental to the erection, demolition, assembling, altering, installing or equipping of buildings, structures, roads or appurtenances thereof, including land clearing, grading, excavating and filling.
CONTINUOUS NOISE. Steady or fluctuating noise which exists essentially without interruption during the period of observation. For the purposes of this chapter, that period shall be one hour.
CYCLICALLY VARYING NOISE. Steady or fluctuating noise which varies in amplitude so that the same sound pressure level is obtained repetitively at uniform intervals of time. A beat is one class of this noise.
DECIBEL. A logarithmic unit of measure often used in measuring magnitudes of sound. The symbol is dB.
DEVISE. Any mechanism which is intended to produce or which actually produces audible sound when operated or handled.
EFFECTIVE SOUND PRESSURE. The instantaneous root mean square-sounds pressure (averaged over a time interval) which varies with the meter characteristic setting on a sound level meter.
EMERGENCY VEHICLE. A motor vehicle used in response to a public calamity or to protect persons or property from an imminent exposure to danger.
EMERGENCY WORK. Work made necessary to restore property to a safe condition following a public calamity or work required to protect persons or property from imminent exposure to danger.
FLUCTUATING NOISE. The sound pressure level of a noise varies more than six dB (A) during the period of observation when measured with the slow meter characteristic of a sound level meter and does not equal the previously existing ambient noise level more than once during the period of observation.
INDUSTRIAL DISTRICT. An area in which enterprise and activities which involve the manufacturing, processing or fabrication of any commodity are located. INDUSTRIAL shall include, but not limited to, any parcel of land zoned as industrial under the zoning ordinance of the village.
IMPULSIVE NOISE. Noise contained excursions, usually less than one second, of sound pressure level 20 dB (A) over the ambient noise level using the fast meter characteristic.
INTERMITTENT NOISE. Noise whose sound pressure level equals or is less than the ambient noise level two or more times during the period of observation and is greater than the ambient during the remainder of the period.
LEVEL, TENTH PERCENTILE. The A-weighted sound pressure that is exceeded 10% of the time or the level that is exceeded six minutes in one hour.
LEVEL, NINETIETH PERCENTILE. The A-weighted sound pressure level that is exceeded 90% of the time or the level that is exceeded for 54 minutes in one hour.
MOTOR VEHICLE. Any vehicle such as, but not limited to, passenger cars, trucks, and truck-trailers, semi-trailers, campers, motorcycles, minibikes, go-carts, snowmobiles, motorboats, racing vehicles, which are propelled by mechanical power.
NOISE. Any sound which is unwanted or which causes or tends to cause an adverse psychological or physiological effect on human beings.
NOISE DISTURBANCE. Any sound which annoys, disturbs, or perturbs reasonable persons with normal sensitivities or which injures or endangers the comfort, repose, health, hearing, peace or safety of other persons.
PERSON. Any human being, firm, association, organization, partnership, business, trust, corporation, company, contractor, supplier, installer, user, owner, or operator and shall include any municipal corporation or its officers or employees.
PLAINLY AUDIBLE NOISE. Any noise for which the information content is unambiguously transferred to the listener, such as, but not limited to, understanding of spoken speech, comprehension or whether a voice is raised or normal, or comprehension of musical rhythms.
PROPERTY BOUNDARY. An imaginary line at the ground surface which separates the real property owned by one person from that owned by another person and its vertical extension.
PUBLIC RIGHT-OF-WAY. Any street, avenue, boulevard, highway, alley, premises or public conveyance which is owned or controlled by a public governmental entity.
PURE TONE. Any noise which can be distinctively heard as a single pitch or set of single pitches.
REPETITIVE IMPULSIVE NOISE. Any noise which is composed of impulsive noises that are repeated at sufficiently slow rates such that a sound level meter set at "fast" meter characteristic will show changes in sound pressure level greater than 10 dB(A).
RESIDENTIAL DISTRICT. An area of single or multifamily dwellings and shall include areas where multiple-unit dwellings, high-rise apartments and high-density residential districts are located. RESIDENTIAL DISTRICT shall also include, but not limited to, hospitals, nursing homes, homes for the aged, schools, courts and similar institutional facilities. RESIDENTIAL DISTRICT shall include,
but not be limited to land zoned as rural, residential, or mobile home of the zoning ordinance of the village.
SOUND. Temporal and spatial oscillation in pressure, stress, or other physical quantity in a medium with internal forces that cause a compression of that medium and which compression propagates to distant points.
SOUND LEVEL METER. An instrument, including a microphone, amplifier, output meter and weighing networks for the measurement of sound pressure. The output meter reads sound pressure level when properly calibrated and the instrument is a Type 2 or better as specified in American National Standards Institution Publication S1.4-1971.
SOUND PRESSURE. The instantaneous difference between the actual pressure and the average or barometric pressure at a given point in space.
SOUND PRESSURE LEVEL. Twenty times the logarithm to the base 10 of the ratio of the root mean square pressure of a sound to the reference pressure, which is 20 X 10/6 newtons per meter squared. It is expressed in decibels (dB).
STATIONARY NOISE SOURCE. Any equipment or facility fixed or movable, capable of emitting sound beyond the property boundary of the property on which it is used.
STEADY NOISE. The sound pressure level of a steady noise remains essentially constant during the period of observation; it does not vary more that 6 dB (A) when measured with the "slow" meter characteristic of a sound level meter.
(Ord. D-166, passed 12-8-1998)