No person shall cause a loud or excessive noise within a city park or playground which unreasonably disturbs the peace and quiet of any neighborhood, the quiet enjoyment of property, or any reasonable person of normal sensitivity residing or working in the area, unless such noise is emanating from a public event for which a permit has been issued by the director or Bidwell Park and Playground Commission, in which case the conditions of such permit as to noise shall apply.
(Res. No. 19 93-94 §2 (part), Res. No. 39 02-03) (Res. No. 31-13 §1)