Unless otherwise expressly stated or the context clearly indicates a different intention, the following terms have the following meanings. Definitions of technical terms used in this chapter which are not herein defined shall be obtained from publications of acoustical terminology issued by the American National Standards Institute (ANSI).
1. “A-weighted sound level” means the sound pressure level in decibels as measured on a sound level meter using the A-Weighted filter network. The A-Weighting filter deemphasizes the very low and very high frequency components of the sound in a manner similar to the response of the human ear. A numerical method of rating human judgment of loudness.
2. “Adverse impact” means a state of facts as would lead a reasonable person of normal sensitivity acting prudently to conclude that the economic, entertainment and philanthropic benefits to the community do not reasonably outweigh the quiet use and enjoyment of the affected property.
3. “Amplified sound” means the production or reproduction of sound from amplification equipment.
4. “Application” means the application submitted to the City requesting a noise permit.
5. “Decibel” (dB) means a unit for measuring the amplitude 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 micro-pascals.
6. “Emergency” means any occurrence or set of circumstances involving actual or imminent physical or psychological trauma or property damage which demands immediate action.
7. “Emergency work” means any work performed for the purpose of alleviating or resolving an emergency.
8. “L10” means the A-Weighted sound level exceeded 10 percent of the sample time, similarly L50, L90, L99, etc.
9. “Motorcycle” means any two or three-wheeled motor vehicle.
10. “Motor vehicle” means any motor-powered vehicle designed to carry at least one passenger or driver and of the type typically licensed for use on the public highways. (Note: “motor vehicle” includes most motorcycles.)
11. “Noise” means any sound which disturbs humans or which causes or tends to cause an adverse psychological or physiological effect on humans.
12. “Noise disturbance” means those sounds defined as “sounds not allowed” in Section 43.06 of this chapter.
13. “Noise sensitive land use” means those specific land uses which have associated indoor and/or outdoor human activities that may be subject to stress and/or significant interference from noise produced by community sound sources. Such human activity typically occurs daily for continuous periods of 24 hours or is in such a nature that noise is significantly disruptive to activities that occur for short periods. Specifically, noise-sensitive land uses include: hospitals, rest homes, convalescent care facilities, places of worship and schools.
14. “Person” means, unless used in such a manner to denote only a human being, any firm, partnership, domestic or foreign corporation, association, joint stock company, trust or other association or entity, City, County or State government and subdivisions or agencies thereof, and the Federal government and subdivisions and agencies thereof.
15. “Powered model vehicle” means any self-propelled, airborne, waterborne or land borne model plane, vessel or vehicle which is not designed to carry persons, including but not limited to, any model airplane, boat, car or rocket.
16. “Public right-of-way” means the traveled portion of any street or alley or similar place which is owned or controlled by the City or other governmental entity.
17. “Real property boundary” means an imaginary line along the ground surface, and its vertical extension, which separates the real property owned by one person from that owned by another person, but not including intra-building real property division.
18. “Recreational vehicle” means any motor-powered vehicle designed to carry at least one passenger or driver and equipped for use in racing or other recreational events or uses off of public right-of-way on public or private property; except, however, for the purposes of this chapter, any such vehicle which is licensed for use on the public highways is deemed a motor vehicle (or motorcycle if two or three-wheeled) and not a recreational vehicle. (Examples of recreational vehicles are snowmobiles, mini-bikes, stockcars or motorboats.)
19. “Residential property” means any property on which is located a building or structure used wholly or partially for living or sleeping purposes.
20. “Sound” means an oscillation in pressure, particle displacement, particle velocity or other physical parameter, in a medium with internal forces that cause compression and rarefaction of that medium. The description of sound may include any characteristic of such sound, including duration, intensity and frequency.
21. “Sound equipment” means any radio, record player, tape deck or player, loud speaker, amplifier, sound track or other device for producing, reproducing or amplifying sound; however, “sound equipment” does not include sirens and other equipment used to alert persons to the existence of an emergency; equipment used by law enforcement and other public safety officials in the performance of their official duties; church carillons, bells or chimes; mobile radio or telephone signaling devices; and automobile and truck radios, tape decks or players or other such standard equipment used and intended for the use and enjoyment of the occupants provided that the sound emitted there from is not audible for more than 50 feet from such automobile or truck.
22. “Sound level” (noise level) means the weighted sound pressure level obtained by use of a sound level meter having a standard frequency-filter for attenuating part of the sound spectrum.
23. “Sound level meter” means an instrument, including a microphone, an amplifier, an output meter, and frequency weighting networks for the measurement and determination of noise and sound levels.
24. “WN” means weekday nights (Sunday through Thursday).
25. “WEN” means weekend nights (Friday and Saturday).