Except as authorized under <cite data-path="|health|§9-303">§ 9-303 {“Temporary exemptions”} of this subtitle</cite>, no person may play, operate, or permit to be played or operated any radio, musical instrument, phonograph, tape- or compact disc-player, or other device for the production or reproduction of sound if: that sound is used or intended for entertainment; and either:the device is in a building or other structure or in a vehicle, and the sound can be heard more than 50 feet away from the building, structure, or vehicle or, if further, 50 feet from the boundaries of the property surrounding the building or structure; the device is in or on a public street, building, park, or other public area, in or on a public access area, such as a shopping mall, parking lot, etc., or on any private property and the sound can be heard more than 50 feet from its source; or the device is being played between 10 p.m. and 8 a.m. in or on a public street, unless the person is participating in a school band or a licensed parade or has otherwise been authorized to play the device. City Code, 1976/83, art. 11, §238(d), art. 19, §221(a) Ord. 99-548