Columbia Definitions ordinance (§ 16-281)

As used in this division, the following terms shall have the meaning indicated in this section:

Sound amplifying equipment: Any machine or device for the amplification of the human voice, music or any other sound amplifying equipment, including a megaphone, amplifier, "walkie-talkie, " amplifiers on fronts of business buildings or other sound device. "Sound amplifying equipment, " shall not be construed as including standard automobile radios when used and heard only by occupants of the vehicle in which installed, or warning devices on authorized emergency vehicles, or horns or other warning devices on other vehicles used only for traffic purposes.

Sound truck or other conveyances: Any vehicle, whether motorized or not, and any airplane, balloon, dirigible or any other type of aircraft, having mounted therein, thereon or attached thereto, any sound amplifying equipment.