Self-contained, portable, non-vehicular music, sound production, amplification devices, or music of any kind cannot start before 7:00 am on any given day. Sunday through Thursday it must end by 10:00 pm, Friday and Saturday at midnight with a noise waiver. Events occurring on the evening prior to a National Holiday, waivers will be permitted until midnight, regardless of the day of week. Allowable decibels (dba)are 60 dba from 7:00 am – 10:00 pm. Between the hours of 10:00 p.m. and 7:00 a.m., sound from such equipment, shall not be plainly audible by any person other than the operator.