Background sound level means the level of all sounds in a given environment, independent of the specific source being measured.
Background sound level means the sound level associated with a given environment, being a composite of sounds from all sources excluding the alleged Intruding Noise, at the location and approximate time at which a comparison with the alleged offensive noise is to be made.
Background sound level means the level of all sounds in a given noise environment excluding the sound from the specific source being measured.
Examples of Background sound level in a sentence
The Rated sound level from any plant, together with any associated ducting shall not exceed the Background sound level (LA90 15min) at the nearest noise sensitive premises.
The Rated sound level from any plant, together with any associated ducting, shall not exceed the Background sound level (LA90 15min) at the nearest noise sensitive premises.
Background sound level: A-weighted sound pressure level that is exceeded by the residual sound at the assessment location for 90% of a given time interval, T, measured using time weighting F and quoted to the nearest whole number of decibels.
Background sound level shall be established separately for daytime (6:00 A.M.-10:00 P.M.) and for nighttime (10:00 P.M.-6:00 A.M.) values.
Background sound level is a level that does not exceed 50 dbA at the property line.
More Definitions of Background sound level
Background sound level means the A-Weighted sound level which is exceeded ninety (90) percent of the time during the period of observation, during which times sounds from routine motor vehicular traffic and other transient sources is inaudible. The period of observation need not necessarily be contiguous; however, the period of observation must be at least ten (10) minutes of duration.
Background sound level means the A-Weighted sound level which is exceeded ninety
Background sound level means the A-weighted sound pressure level of all sound associated with a given environment, exceeded ninety (90) percent of the time (L90) measured and being a composite of sounds from many sources during the period of observation while the noise level from the noise source of interest is not present.
Background sound level means the level of all sounds in a given environment, independent of the specific source being measured. (2) "dBA" means the sound pressure level in decibels measured using the "A" weighting network on a sound level meter. The sound pressure level, in decibels, of a sound is 20 times the logarithm to the base 10 of the ratio of the pressure of the sound to a reference pressure of 20 micropascals. (3) "Department" means the department of ecology. (4) "Director" means the director of the department of ecology. (5) "Distribution facilities" means any facility used for distribution of commodities to final consumers, including facilities of utilities that convey water, waste water, natural gas, and electricity. (6) "EDNA" means the environmental designation for noise abatement, being an area or zone (environment) within which maximum permissible noise levels are established. (7) "Existing" means a process, event, or activity in an established area, producing sound subject to or exempt from this chapter, prior to the effective date of September 1, 1975. (8) "Local government" means county or city government or any combination of the two. (9) "Noise" means the intensity, duration and character of sounds, from any and all sources. (10) "Person" means any individual, corporation, partnership, association, governmental body, state agency or other entity whatsoever. (11) "Property boundary" means the surveyed line at ground surface, which separates the real property owned, rented, or leased by one or more persons, from that owned, rented, or leased by one or more other persons, and its vertical extension. (12) "Racing event" means any motor vehicle competition conducted under a permit issued by a governmental authority having jurisdiction or, if such permit is not required, then under the auspices of a recognized sanctioning body. (13) "Receiving property" means real property within which the maximum permissible noise levels specified herein shall not be exceeded from sources outside such property. (14) "Sound level meter" means a device which measures sound pressure levels and conforms to Type 1 or Type 2 as specified in the American National Standards Institute Specification S1.4-1971. [Statutory Authority: Chapter70.107 RCW. WSR 94-12-001 (Order 92-41), § 173-60-020, filed 5/18/94, effective 6/18/94; WSR 83-15-046 (Order DE 82-42), § 173-60-020, filed 7/19/83; Order DE 77-1, § 173-60-020, filed 6/1/77; Order 74-32, § 173-60-020, filed 4/22/75, effective 9/1/75...
Background sound level means the Sound level that is present in the environment produced by Noise Sources other than the Source under investigation, usually caused by road traffic and/or stationary sources that have received formal municipal or provincial approvals (Short duration Noise caused by Sources other than the source under investigation, such as an aircraft fly-over or a train pass-by, are to be excluded from the determination of the Background Sound Level.). For the purposes of this By-Law, the Background Sound Level is expressed in terms of the One-Hour Equivalent Sound Level denoted Leq (1) (Reference shall also be made to the definition of “Exclusion Limits”);
Background sound level. ’ means the hourly average
Background sound level means the A-weighted sound pressure level of all sound