Unless the context otherwise clearly requires, technical words and phrases used in this Chapter are defined as follows:
(a) Sound Amplifying Equipment. “Sound amplifying equipment” shall mean any machine or device for the amplification of the human voice, music or any other sound. “Sound amplifying equipment” shall not include standard vehicle radios when used and heard only by the occupants of the vehicle in which the vehicle radio is installed. “Sound amplifying equipment” as used in this Chapter, shall not include warning devices on any vehicle used only for traffic safety purposes and. shall not include communications equipment used by public or private utilities when restoring utility service following a public emergency or when doing work required to protect persons or property from an imminent exposure to danger.
(b) Ambient Noise. “Ambient Noise” shall mean the allencompassing noise associated with a given environment usually being composed of sounds from many sources near and far. For the purpose of this Chapter, the ambient noise level shall be the average over a period necessary to establish an accurate range of noise levels emanating from the noise source without inclusion of noise from isolated identifiable sources, at the location and time of day near that at which a comparison is to be made.
(c) Decibel. “Decibel (dB)” shall mean an intensity unit which denotes the ratio between two quantities which are proportional to power; the number of decibels corresponding to the ratio is ten times the common logarithm of this ratio.
(d) Sound Level. “Sound Level”-- (noise -level) in decibels is the value of a sound measurement using the appropriate weighting network of a sound level meter. Slow response of the sound level meter needle shall be used except where the sound is impulsive or rapidly varying in nature in which case fast response shall be used.
(e) Person. “Person” shall mean a person, firm, association co-partnership, joint venture, corporation, or any entity, public or private in nature.
(f) Sound Level Meter. “Sound Level Meter” shall mean an instrument including a microphone, an amplifier, an output meter, and frequency weighting networks for the measurement of sound levels which satisfies the pertinent requirements in American National Standards Institute's specification S1.4-1971 or the most recent revision thereof for type S-2A general purpose sound level meters.
(g) Supplementary Definitions of Technical Terms. Definitions of technical terms not defined herein shall be obtained from the American National Standards Institute's Acoustical Terminology Si1971 or the most recent revision thereof.
(Ord. 71, passed 3-4-1998)