For purposes of this §
177-10, the following definitions shall apply:
A-WEIGHTED
A specific weighting of the sound pressure level for the
purpose of determining the human response to sound. The specific weighting
characteristics and tolerances are those given in American National
Standards Institute S1.4-2014, or the most recent revision thereof.
AMBIENT NOISE
The all-encompassing noise associated with a given source,
usually being a composite of sounds with many sources near and far,
but excluding the noise source being measured.
COMPLAINANT
Any person who submits a noise complaint to the City of Rice
Lake Police Department.
DAYTIME
Those hours from 7:00 a.m. to 9:59 p.m.
dBA
A unit of sound pressure level expressed in decibels (dB)
and A-weighted.
DECIBEL
A unit of sound pressure level, abbreviated as "dB."
EQUIVALENT SOUND LEVEL
The actual energy-equivalent average sound pressure level
measured over a specified length of time, abbreviated as Leq, or LAeq when the decibels
have been A-weighted.
IMPULSIVE NOISE
Either a single sound pressure peak (with either a rise time
less than 200 milliseconds or total duration less than 200 milliseconds)
or multiple sound pressure peaks (with either rise times less than
200 milliseconds or total duration less than 200 milliseconds) spaced
at least by 200-millisecond pauses.
NIGHTTIME
Those hours from 10:00 p.m. to 6:59 a.m.
NOISE MONITOR
A City official, employee, or designee tasked with measuring noise levels in accordance with this §
177-10 and who has been appropriately trained to make such measurements.
NOISE RATING
The overall A-weighted equivalent sound level, LAeq, measured over a period of time no less than 10 minutes
and no greater than one hour.
PERSON
Any natural person; any entity, including, but not limited
to, corporations, partnerships, joint ventures, limited-liability
companies, trusts, estates, or associations, whether organized for
profit or otherwise; and/or federal, state, or local governments or
other governmental entities and any subdivisions or instrumentalities
thereof.
SOUND LEVEL METER
An instrument, including a microphone, an amplifier, an output
meter and frequency weighting network, for the measurement of sound
pressure Levels, which satisfies the requirements pertinent for Class/Type
0, 1, or 2 meters in American National Standards Institute specifications
for sound level meters, S1.4-2014, or the most recent revision thereof.
SOUND PRESSURE LEVEL
In decibels, means 20 times the logarithm to the base 10
of the ratio of the pressure to the reference pressure. The reference
pressure shall be 20 uPa.
TONE
Any sound which can be judged as audible as a single pitch
or a set of single pitches. A 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 contiguous one-third
octave bands by five dB for center frequencies of 500 hertz and above,
by eight dB for center frequencies between 160 and 400 hertz, and
by 15 dB for center frequencies less than or equal to 125 hertz.
USE
Any use permitted by the land use zoning district.
ZONE
Land use zoning district.