No person shall use or permit the use of any sound amplification device in any outdoor area in Holbrook-Palmer Park. No person or organization, conducting an activity inside a building at Holbrook-Palmer Park pursuant to a use permit, shall cause or permit a noise in excess of sixty dBA, as defined in Chapter 8.16 of this code, measured at a distance of fifty feet from any outside wall of the building. (Ord. 367 (part), 1978; Ord. 335 Ch. 9(d) § 6, 1975)