What is the Los Angeles Noise ordinances at LOW FREQUENCY?

Question

Yea Phil, But What are the regulations of the city of Los Angeles concerning low frequency machinary,like they cant go beyond a certain dB.

Answer 1

It depends on the type of low frequency noise.  Here is a sumamry of the restictions.

The following is a list of Los Angeles Municipal Code (LAMC) sections of the Noise Ordinance and a summary of the elements that constitute a violation:

41.32 LAMC-Theatres and Sound Amplifiers

▪ Operating any sound amplifying system;

▪ As a part of any show;

▪ In such a manner that is audible to the human ear;

▪ More than 50 feet from the property line or structure where the show is being conducted.

41.40 LAMC- Construction Noise

▪ Engaging in construction, repair, or excavation work with any construction type device, or job-site delivering of construction materials without a Police Commission permit;

▪ Between the hours of 9:00 p.m. and 7:00 a.m.;

▪ In any residential zone, or within 500 feet of land so occupied, before 8:00 a.m. or after 6:00 p.m. on any Saturday, nor at any time on any Sunday;

▪ In a manner as to disturb the peace and quiet of neighboring residents or any reasonable person of normal sensitiveness residing in the area.

41.42 LAMC-Music Reproducing Devices

▪ Every owner or operator of any public resort;

▪ Where phonograph, loud speaker, or any other device for the reproduction of sound is played for hire;

▪ Shall not allow the playing of such device;

▪ Between the hours of 2:00 a.m. and 5: 00 a.m.

41.44 (c) LAMC- Miniature Golf (noise signs)

▪ Every owner or operator of any miniature golf course;

▪ Shall display in a conspicuous place;

▪ At least 4 signs, in English, in letters at least 2 inches in height;

▪ Requesting patrons to refrain from unnecessary noise.

41.44 (4) e LAMC-Miniature Golf (sound devices)

▪ Operating any radio, or Sound producing device;

▪ Upon any miniature golf course or driving range;

▪ Between the hours of 10:00 p.m. and 7:00 a.m.

41.57 LAMC- Loud and Raucous Noise

▪ Every person who allows, causes, or permits;

▪ Loud noises from any sound making or amplifying device;

▪ On any private property, public street, of any other public place;

▪ In such a manner as to interfere with the peace and quiet of any person within or upon any of such places.

Note: Need to consider hour, place, nature of noise, and any other circumstances.

112.01 LAMC- Radios, Television Sets, and Similar Devices

▪ Operating any radio, television, phonograph, musical 'instrument, or other sound producing device;

▪ Audible to the human ear at a distance in excess of 150 feet from the property line of the noise source;

▪ In a residential zone or within 500 feet thereof;

▪ In such a manner as to disturb the peace, quiet, and comfort of neighboring residents or any reasonable person of normal sensitiveness residing in the area.

113.01 LAMC- Rubbish and Garbage Collection

▪ Engaging in the commercial collection or disposing of rubbish or garbage;

▪ In a residential zone or within 200 feet thereof;

▪ Between the hours of 9:00 p.m. and 6:00 a.m.

114.01 LAMC- Vehicle Repair

▪ Engaging in the repair or rebuilding of a motor vehicle;

▪ In a residential zone or within 500 feet thereof;

▪ Between the hours of 8:00 p.m. and 8: 00 a.m.;

▪ Audible to the human ear at a distance in excess of 150 feet from the property line of the noise source;

▪ In a manner which causes discomfort or annoyance to a reasonable person of normal sensitiveness residing in the area.

114.02(a) LAMC- Vehicle Engine, Horn, and Vehicle Noise

▪ Every person who unreasonably operates a motor vehicle, accelerates the engine, or sounds the horn;

▪ As to disturb the peace, quiet, and comfort of any neighborhood or of any reasonable person residing in such area;

▪ Audible to the human ear at a distance in excess of 150 feet from the property line of the noise source.

Note: This section shall not be applicable to any vehicle which is operated upon any public highway, street, or right-of-way, or to the operation of any off highway vehicle to the extent it is regulated in the Vehicle Code.

115.02 LAMC- Amplified Sound

▪ Engaging in the installation, use, or operation of any loudspeaker or sound amplifying equipment in a fixed or movable position;

▪ For the purposes of giving instruction, directions, talks, addresses, lectures, or transmitting music to any persons 'in or on any public street, sidewalk, park, or other public place;

▪ For commercial purposes in a residential area or within 500 feet thereof at any time H 15.02 [a] L.A.M.C.);

OR

▪ For non-commercial purposes in a residential zone or within 500 feet thereof (except school and church purposes), between 4:30 p.m. and 9:00 a. m. (115.02 [ b I L. A. M. C.);

OR

▪ For commercial purposes in a nonresidential zone between 9:00 p.m. and 8:00 a.m. (115.02 [c] L.A.M.C.);

OR

▪ For non-commercial purposes more than 500 feet from residential zones between 10:00 p.m. and 7:00 a.m. (115.02 [d] L.A.M.C.);

OR

▪ Emitting sounds other than human speech and/or music (115.02 [e] L.A.M.C.);

OR

▪ Emitting sounds audible at a distance in excess of 200 feet, or sounds which are loud, raucous, or disturbing to reasonable persons of normal sensitiveness within the area of audibility ( 115.02 [f ] L.A.M.C.);

OR

▪ Within 200 feet of any hospital grounds or any school or church building while in use (115.02 [g] L.A.M.C.).

116.01 LAMC- General Noise

▪ Willfully making or causing to be made or continued;

▪ Any loud, unnecessary, and unusual noise;

▪ Which disturbs the peace or quiet of any neighborhood or which causes discomfort or annoyance to any reasonable person of normal sensitiveness residing in the area.

Note: In determining whether or not a noise violates this section, officers should consider the following factors:

▪ Level of the noise;

▪ Nature of the noise (usual or unusual );

▪ Origin of the noise (natural or unnatural );

▪ Level and intensity of any background noise;

▪ Proximity of the noise to sleeping facilities;

▪ Nature and zoning of the area;

▪ Density of inhabitation in the area;

▪ Time of day or night the noise occurs;

▪ Duration of the noise;

▪ Whether the noise is recurrent, intermittent, or constant;

▪ Whether the noise is produced by commercial or non-commercial activity.

Answer 2

Low freq. sound travels further than hi freq. does. An other item is we can' t hear above 22kHz. (our hearing range is about 20Hz to 20kHz)