All terminology used in this subchapter shall be consistent with applicable American National Standards Institute Publications, such as S1.1 1960 (R-1971) or S1.13 1971, or those from its successor publications or bodies. For the purpose of this subchapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
A WEIGHTED SOUND PRESSURE LEVEL. The sound pressure level as measured with a
sound level meter using the A weighting network. The standard notation is dB(A).
DECIBEL. A dimensionless measure of level when the base of the logarithm is the tenth root of ten.
DEVICE. Any mechanism which is intended to produce or which actually produces audible sound when operated or handled.
NOISE. Any sound which is unwanted or which causes or tends to cause an adverse psychological or physiological effect on human beings.
PLAINLY AUDIBLE NOISE. Any noise for which the information content of that noise is unambiguously transferred to the listener, such as, but not limited to, understanding of spoken speech, comprehension of 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, premise, or public conveyance which is owned or controlled by a public governmental entity.
SOUND LEVEL METER. An instrument, including a microphone, amplifier, output meter, and weighting networks, for the measurement of sound pressure. The output meter reads sound pressure level when properly calibrated and the instrument is of Type 2 or better as specified in American National Standards Institute Publication S1.4-1971.
SOUND PRESSURE LEVEL. It is 20 times the logarithm to the base ten of the ratio of the effective sound pressure to the reference pressure which is 20 x 10-6 Newtons/meter2. It is expressed in decibels (dB).
STEADY SOUND. The sound pressure level of a steady sound remains essentially consistent during the period of observation, i.e., it does not vary more than six dB(A) when measured with the "slow" meter characteristic of a sound level meter.
(Prior Code, § 4-601)
Statutory reference:
Authority, see Neb. RS 16-227, 16-228