For the purpose of this subchapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
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) 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).
LIGHT-MOTOR VEHICLES. Any automobile, van, motorcycle, motor-driven cycle, motorscooter, go cart, minibike, trail bike, or truck with gross vehicular weight of less than 8,000 pounds.
NOISE LEVEL. The a-weighted sound level produced by a motor vehicle.
PERSON. Any individual, association, partnership or corporation which includes any officer, employee, department, agency, or instrumentality.
SOUND-LEVEL METER. An instrument which includes a microphone, amplifier, RMS detector, integrator or time averager, 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.
TRAFFIC NOISE. Sound made by a motor vehicle operated either on the public right-of-way or private property.
('86 Code, § 20-122) (Ord. 90-G-06, passed 7-30-90)