§ 50-348. Definitions.

The following words, terms and phrases, when used in this division, shall have the following meanings ascribed to them in this section, except where the context clearly indicates a different meaning. All technical acoustical terminology and standards used in this division, which are not defined in section 50-1, or otherwise defined in this section, shall be read or construed in conformance with applicable publications and standards of the American National Standards Institute, (ANSI), or its successor bodies.

A-weighted sound level means the sound pressure level in decibels as measured with a sound level meter using the A-weighting network. The unit of measurement is the decibel or dBA.

Construction means any site preparation, any assembly, erection, substantial repair, alteration or similar action, excluding demolition, for or on public or private property or rights-of-way, structures, utilities or similar property.

Continuous airborne sound means sound that is measured by the slow-response setting of a sound level meter manufactured to the specifications of ANSI S1.4-1971 (R1976), or its successor.

Decibel, also dBA, means a unit for measuring the intensity of a sound wave, equal to 20 times the logarithm of the ratio of the pressure produced by the sound wave measured to a reference pressure, usually 0.0002 microbar, or 20 micropascals (20 micronewtons per square meter).

Demolition means any dismantling, intentional destruction or removal of structures from public or private property.

Emergency means any occurrence or set of circumstances involving actual or imminent physical trauma or damage to persons or property which necessitates immediate action. Economic loss shall not be the sole determining factor in the determination of an emergency. It shall be the burden of an alleged violator to prove an "emergency."

Emergency work means any work made necessary to restore property to a safe condition following an emergency, or to protect persons or property threatened by an imminent emergency, to the extent such work is necessary to protect such persons or property from exposure to imminent danger or damage.

Frequency means the number of complete oscillation cycles per unit of time.

Noise means any sound which is unwanted or which causes or tends to cause an adverse psychological or physiological effect on humans.

Noise disturbance means any sound in excess of 50 dBA between the hours of 10:00 p.m. and 7:00 a.m. when measured not closer than the property line of a property with a zoning district of RR, RR-2, RR-3, RR-3C, RR-3M, R or RMU or a residential designation on the comprehensive plan future land use map, or from the nearest affected dwelling unit.

Plainly audible means any sound or noise produced by any source, or reproduced by a radio, tape player, television, CD player, electronic audio equipment, musical instrument, sound amplifier or other mechanical or electronic sound making device, that can be clearly heard by a person using his/her normal hearing faculties.

Public right-of-way means any street, avenue, boulevard, sidewalk, bike path or alley, or similar place normally accessible to the public which is owned or controlled by a governmental entity.

Public space means any lot or parcel, either privately or publicly owned, which may or may not contain a building or structure, which is open to the general public during its hours of operation.

Sound means an oscillation in pressure, stress, particle displacement, particle velocity or other physical parameter, in a medium with internal forces that causes compression and rarefaction of that medium. The description of sound may include any characteristic of such sound, including duration, intensity and frequency.

Sound level means the weighted sound pressure level as measured in dB(A) by a sound level meter and as specified in ANSI specifications for sound-level meters S1.4-1971 (R1976), or its successor. If the frequency weighting employed is not indicated, the A-weighting shall apply.

Sound level meter means an instrument, including a microphone, an amplifier, an output meter, and frequency weighting networks, for the measurement of sound levels.

Weekday means any day Monday through Friday that is not a paid holiday as defined in F.S. § 110.117(1), as the same may be amended.

(Ord. No. 2015-09 , § 3, 12-8-2015)