No person shall operate any loudspeaker or sound amplifier or instrument, in such a manner as to cause any sound to be projected outside of any building, or out-of-doors, in any part of the city between the hours of ten p.m. and ten a.m., except during public events and affairs of interest to the general public, and then only on permit from the chief of the department of public safety. Such permit shall be granted upon application therefor, but shall be revocable by the chief of public safety whenever any such loudspeaker or sound amplifier or instrument is objectionable to, or disturbs the public peace, and in the event of the revocation of any such permit the same shall not be renewed without satisfactory proof to the chief of public safety that the public peace will no longer be disturbed.
(Prior code § 4-9.03)