Decibel measurements shall be made with a sound level meter and shall be based on a reference sound pressure of 0.0002 microbars, as measured in any octave band with center frequency, in cycles per second, as follows: 63, 125, 250, 500, 1,000, 2,000, 4,000, and 8,000, and for the combined frequency bands. (Ord. 11-O-2613, eff. 10-31-2011)