For the purposes of this chapter, the following words and phrases shall have the meanings respectively ascribed to them by this section:
Any undesirable audible sound or any sound that annoys humans or that causes or tends to cause an adverse psychological or physiological effect on humans.
Any machine or device for the amplification of the human voice, music or any other sound, and shall not be construed to include 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 safety purposes.
[Amended at time of adoption of Code (see Ch. 305, General Provisions, Art. I)]