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(6) Sound Level: In decibels, a weighted sound pressure level <br /> determined by the use of a sound level meter whose <br /> characteristics and frequency weightings are specified in the <br /> ANSI Standards. <br /> (17) Sound Level Meter: Any instrument certified to meet or exceed <br /> ANSI standards which includes an omni-directional microphone, an <br /> amplifier, an output meter and frequency weighting network(s) for <br /> the measurement of sound level. <br /> 8) Sound Pressure Level: In decibels 20 times the logarithm to the <br /> base 10 of the ratio of the magnitude of a particular sound <br /> pressure to the standard reference pressure. The standard <br /> reference pressure is 20 micronewtons/meter2. <br /> Article II: Maximum Permissible Standards by Receiving Land <br /> (l The use of sound amplifying equipment is limited to the <br /> conditions specified in this article. <br /> (2) A live musical group or individual using sound amplifying <br /> equipment may operate out of doors only if the property owner, <br /> tenant in possession or in the case of a business the business <br /> manager or an authorized agent of that business manager has <br /> been granted a permit. This permit may be secured after it is <br /> signed by an authorized agent of the musical group and by a <br /> representative of the individual organization or group retaining <br /> the services of the musical group and on whose premises the <br /> amplifying equipment is to be used. <br /> (3) No person shall operate or cause to be operated any source of <br /> sound in such a manner as to create a sound level which exceeds <br /> -2- <br />