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A RESOLUTION AND ORDINANCE TO PROVIDE FOR THE 1 <br /> CONTROL OF NOISE IN ORANGE COUNTY <br /> Pursuant to the authority provided in N.C. Gen. Stat. Section <br /> 153A-121, 153A-123 and 153A-133, the Board of Commissioners of <br /> Orange County hereby resolves and ordains as follows: <br /> Article I: Definitions <br /> In addition to the common meaning of words, the <br /> following definitions shall be used in interpreting <br /> this ordinance. <br /> (1) "A" weighting scale: The sound pressure level in <br /> decibels as measured with a sound level meter <br /> using the "A" weighted network. The standard unit <br /> notation is dB(A) . <br /> (2) dB(A) : Sound level in decibels determined by the <br /> "A" weighting scale of a standard sound level <br /> meter having characteristics defined by the <br /> American National Standards Institute (ANSI) <br /> Publication ANSI, S14-1971. <br /> (3) Decibel: A unit of measure on a logarithmic <br /> scale, of the ratio of the magnitude of a <br /> particular sound pressure to a standard reference <br /> pressure, which for purposes of this ordinance <br /> shall be 20 microewtons/meter2 . <br /> (4) Impact Noise: Sound that occurs intermittently <br /> rather than continuously. <br /> (5) Sound Amplifying Equipment: Any device for the <br /> amplification of the human voice, music or any <br /> other sound, including juke boxes, stereos and <br /> radios. <br /> (6) Sound Level: In decibels, a weighted sound <br /> pressure level determined by the use of a sound <br /> level meter whose characteristics and frequency <br /> weightings are specified in the ANSI Standards. <br /> (7) Sound Level Meter: Any instrument certified to <br /> meet or exceed ANSI standards which includes an <br /> omni-directional microphone, an amplifier, an <br /> output meter and frequency weighting network(s) <br /> for the measurement of sound level. <br /> (8) Sound Pressure Level: In decibels 20 times the <br /> logarithm to the base 10 of the ratio of the <br /> magnitude of a particular sound pressure to the <br /> standard reference pressure. The standard <br /> reference pressure is 20 microewtons/meter2. <br /> Article II: Maximum Permissible Standards by Receiving Land <br />