Definitions. The following definitions shall be applicable in this
section, unless the context otherwise clearly indicates:
A BAND LEVEL
The total level of all noise as measured with a sound-level
meter using the "A" weighting network. The unit is the dB(A). Instrument
response shall be set on "fast" for motor vehicle measurement and
"slow" for all other measurements.
AMBIENT NOISE LEVEL
The sound-pressure level of the all-encompassing noise associated
with a given environment, being usually a composite of sounds with
many sources and excluding the specific noise under investigation.
BAND-PRESSURE LEVEL
The sound-pressure level for the sound contained within the
restricted band (a specific frequency).
COMMERCIAL PURPOSE
The use, operation or maintenance of any sound-amplifying
equipment for the purpose of advertising any business or any goods
or any services or for the purpose of attracting the attention of
the public to or advertising for, or soliciting patronage or customers
to or for, any event, performance, show, exhibition or entertainment,
or for the purpose of demonstrating any such sound equipment.
CYCLE
The complete sequence of values of a periodic quantity which
occurs during a period of time.
DECIBEL (dB)
A unit of level which denotes the ratio between two quantities
which are proportional to power; the number of decibels corresponding
to the ratio of two amounts of power is 10 times the logarithm to
the base 10 of this ratio.
EMERGENCY WORK
Work made necessary to restore property to a safe condition
following a public emergency or work required to protect persons or
property from an imminent exposure to danger.
FREQUENCY
The frequency of a function periodic in time shall mean the
reciprocal of the primitive period. The unit is the "cycle per unit"
and shall be specified.
MICROBAR
A unit of pressure commonly used in acoustics and is equal
to one dyne per square centimeter.
MOTOR VEHICLE
Is defined in § 340.01(35), Wis. Stats. For purposes
of this section, "motor vehicle" includes but is not limited to all
of the following:
(1)
Aircraft as defined in § 29.001(6), Wis. Stats.
(2)
All-terrain vehicles as defined in § 340.01(2g), Wis.
Stats.
(3)
Antique vehicles as described in § 341.265, Wis. Stats.
(4)
Automobiles as defined in § 340.01(4), Wis. Stats.
(5)
Boats as defined in § 29.001(16), Wis. Stats.
(6)
Camping trailers as defined in § 340.01(6m), Wis.
Stats.
(7)
Farm equipment as defined in § 100.47(1), Wis. Stats.
(8)
Farm tractors as defined in § 340.01(16), Wis. Stats.
(9)
Hobbyist or homemade vehicles as defined in § 341.268,
Wis. Stats.
(10)
Junk vehicles as defined in § 340.01(25j), Wis. Stats.
(11)
Implements of husbandry as defined in § 340.01(24),
Wis. Stats.
(12)
Manufactured homes as defined in § 101.91(2), Wis.
Stats.
(13)
Mobile homes as defined in § 340.01(29), Wis. Stats.
(14)
Mopeds as defined in § 340.01(29m), Wis. Stats.
(15)
Motor bicycles as defined in § 340.01(30), Wis. Stats.
(16)
Motor buses as defined in § 340.01(31), Wis. Stats.
(17)
Motor homes as defined in § 340.01(33m), Wis. Stats.
(18)
Motor trucks as defined in § 340.01(34), Wis. Stats.
(19)
Motor vehicle as defined in § 340.01(35), Wis. Stats.
(20)
Motorcycles as defined in § 340.01(32), Wis. Stats.
(21)
Railroad trains as defined in § 340.01(48), Wis. Stats.
(22)
Recreational vehicles as defined in § 340.01(48r),
Wis. Stats.
(23)
Road machinery as defined in § 340.01(52), Wis. Stats.
(24)
Road tractors as defined in § 340.01(53), Wis. Stats.
(25)
Salvage vehicles as defined in § 340.01(55g), Wis.
Stats.
(26)
School buses as defined in § 340.01(56), Wis. Stats.
(27)
Self-propelled vehicles of any type.
(28)
Semitrailers as defined in § 340.01(57), Wis. Stats.
(29)
Snowmobiles as defined in § 340.01(58a), Wis. Stats.
(30)
Special interest vehicles as defined in § 341.266,
Wis. Stats.
(31)
Trailers as defined in § 340.01(71), Wis. Stats.
(32)
Truck tractors as defined in § 340.01(73), Wis. Stats.
(33)
Unlicensed demolition motor vehicles, unlicensed racing motor
vehicles, and go-carts, garden tractors, riding lawn mowers, and other
motorized utility vehicles that require no registration or licensure
by the State of Wisconsin.
NONCOMMERCIAL PURPOSE
The use, operation or maintenance of any sound equipment
for other than a commercial purpose, and shall include, but not be
limited to, civic, patriotic, philanthropic, charitable and/or political
purposes.
PERIOD
The smallest increment of time for which the function repeats
itself.
PERIODIC QUANTITY
The oscillating quantity, the values of which recur for equal
increments of time.
SOUND ANALYZER
A device for measuring the band-pressure level or pressure-spectrum
level of a sound as a function of frequency.
SOUND TRUCK
Any motor vehicle, or any other vehicle regardless of method
of motive power, whether stationary or in motion, having mounted thereon,
or attached thereto, any sound-amplifying equipment.
SOUND-AMPLIFYING EQUIPMENT OR DEVICE
Any device, equipment, musical instrument, loudspeaker, radio,
television, digital or analog music player, public address equipment,
electronics or machine for the amplification or intensification of
music, the human voice, or any other sound. Not included in this definition
are standard automobile or truck radios and audio equipment when used
and heard only by the occupants of the vehicle in which the radio
or audio equipment is installed. As used in this section, this definition
shall also not include warning devices on any emergency vehicle or
vehicle used for traffic or worker safety purposes.
SOUND-LEVEL METER
An instrument sensitive to pressure fluctuations and meeting
the standards of the American National Standards Institute (ANSI)
SI.4-1983 or its successors. The instrument shall use the "A" weighted
network.
SOUND-PRESSURE LEVEL
Measured in decibels of sound, shall mean 20 times the logarithm
to the base 10 of the ratio of the pressure of this sound to the reference
pressure, which reference pressure shall be explicitly stated.