(A) Definitions. For the purpose of this section and § 95.095(B)(17), the following definitions shall apply:
A-WEIGHTED SOUND LEVEL. The sound pressure level in decibels as measured on a sound level meter using the A-weighting network or a sound level which can be heard not less than 50 feet from its source, whichever of these 2 measurements is exceeded. The level so read is designated dB(A) or dBA.
DECIBEL(dB). A unit for measuring the volume of a sound, 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).
NOISE LEVEL. The A-weighted sound level produced by a motor vehicle.
SOUND LEVEL METER. An instrument which includes a microphone, amplifier, RMS detector, integrator or time average, output meter and weighting networks used to measure sound pressure levels. The instrument shall be used for measurement of the intensity of sound and calibrated in decibels as standardized by the American National Standards Institute (ANSI). Readings shall be made on a dB(A) scale.
(B) Noise limit.
(1) It shall be unlawful for any person to cause noise levels from the operation or use of motor vehicles in excess of 83 dB(A) in any area within the corporation limits of the city at any time.
(2) The noise level limit shall be measured at a distance of not less than 15 feet from the noise source.
(1979 Code, § 95.46) (Ord. 4178, passed 10-3-1994; Am. Ord. 4433, passed 7-12-1999
; Am. Ord. 5116, passed 7-7-2008
) Penalty, see § 95.999