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 > Your search for posts made by 'Ron3rd' found 534 matches.

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RE: Riddle Me This Batman; Low Frequency Hum: SOLVED

Problem is solved; the hum came back this morning right at 9:00 am. By chance, the wife walked into a far area of the back yard and heard the hum. It was coming near a block wall on the rear of the property. I looked over the block wall and discovered the source. It was from a neighbor's pool pump. Not the neighbor's pool directly behind us; his pump was off. It was the neighbor NEXT DOOR TO HIM, and not directly behind us! Same sounds, same frequency. Thanks for all the suggestions from those who offered help.
Ron3rd 12/15/18 01:21pm Tech Issues
RE: Low frequeny hum post...

Op here, yes I live in the suburbs connected to all the usual utilities
Ron3rd 12/15/18 09:07am Tech Issues
RE: Riddle Me This Batman; Low Frequency Hum: SOLVED

To track this down, the very first requirment is to verify the frequency of the sound. Is it 60 hertz, 30 hertz, 10 hertz, etc. Then you will have a chance to start looking for a source. Makes sense. How would I do that? Since no one followed up on an early in this thread suggestion with link for a downloadable audio frequency analyzer I suppose that vital assistance was rejected. Hey Mex, sorry I missed that. I downloaded the program and will try to figure out how to use it.
Ron3rd 12/14/18 11:57am Tech Issues
RE: New Meter on order

Nice! I want one!
Ron3rd 12/14/18 11:39am Tech Issues
RE: Riddle Me This Batman; Low Frequency Hum: SOLVED

To track this down, the very first requirment is to verify the frequency of the sound. Is it 60 hertz, 30 hertz, 10 hertz, etc. Then you will have a chance to start looking for a source. Makes sense. How would I do that?
Ron3rd 12/14/18 11:37am Tech Issues
RE: Riddle Me This Batman; Low Frequency Hum: SOLVED

Even without power poles in the neighborhood there are still transformers. You likely share one with several neighboring houses. Maybe the hum comes and goes with demand. It may even be underground. Found this after writing my response: http://articles.latimes.com/2009/sep/05/local/me-hum5 We do have an underground transformer across the street. It was replaced about 6 mos ago as regular maintenance. BINGO!! My bet is on that. I guess that's theoretically possible but it's heard nowhere in the house except this one rear bedroom that is the farthest away from the transformer. The two bedrooms closer to the transformer are not effected. However, if there is an underground transformer on the street behind my house, that would be closer to the effected bedroom. I'm gonna walk over there and see if there is one. In this neighborhood, they are in the grass in the front yard on a lot of streets. Looks like a storm drain grate. You would never know it was a transformer. I've never heard any sound from one but I'll check.
Ron3rd 12/14/18 11:37am Tech Issues
RE: Riddle Me This Batman; Low Frequency Hum: SOLVED

Turn off water to house and open a faucet both hot and cold. The hum is back and I shut the water off at the meter; no effect on the sound.
Ron3rd 12/14/18 11:33am Tech Issues
RE: Riddle Me This Batman; Low Frequency Hum: SOLVED

Even without power poles in the neighborhood there are still transformers. You likely share one with several neighboring houses. Maybe the hum comes and goes with demand. It may even be underground. Found this after writing my response: http://articles.latimes.com/2009/sep/05/local/me-hum5 We do have an underground transformer across the street. It was replaced about 6 mos ago as regular maintenance.
Ron3rd 12/14/18 11:23am Tech Issues
RE: Riddle Me This Batman; Low Frequency Hum: SOLVED

Etiwanda Power Plant to the west of you is not operating but to the south is Ontario Airport?? IS the car crushing/smelting plant by the Etiwanda Power Pant still in operation Huge electric arch smelters Both those plants are about 5 miles away from me. Don't know if the smelters are still in operation. I've never heard of them.
Ron3rd 12/14/18 11:22am Tech Issues
RE: Riddle Me This Batman; Low Frequency Hum: SOLVED

Is there a sewer lift pump in your neighborhood? Do you or anyone else close by have a battery powered sump pump? None of those around here.
Ron3rd 12/14/18 11:20am Tech Issues
RE: Riddle Me This Batman; Low Frequency Hum: SOLVED

Is there a laptop or other (partly) battery powered device in the room? Some little cooling fans on low speed can sound like a slight hum. I haven't heard it myself, but I suppose many battery powered or battery backed gizmos could malfunction and emit a bit of a hum...so I would see if I could localize it to e.g. a smoke detector, alarm clock with battery backup, etc. Nothing battery powered in that room.
Ron3rd 12/14/18 11:20am Tech Issues
RE: Riddle Me This Batman; Low Frequency Hum: SOLVED

Use the old mechanics trick. Get a piece of wood like a broomstick (poor mans stethoscope). Put one end against your ear and the other against different walls/sections of the wall, floor and ceiling. You should be able to pinpoint the area the sound is coming from. Good point; I have one of those mechanic's stethoscopes so it might be worth it to poke around.
Ron3rd 12/14/18 08:47am Tech Issues
RE: Riddle Me This Batman; Low Frequency Hum: SOLVED

try changing the resonant frequency of the room. Tell me how to do that and I'll give it a try!
Ron3rd 12/14/18 08:46am Tech Issues
RE: Riddle Me This Batman; Low Frequency Hum: SOLVED

Maybe this. x2 That link has some merit but the point they make about conditions in ones ear leading to the hearing of a hum in not applicable IMO because both my wife and I hear the same thing and my wife's hearing is much better than mine.
Ron3rd 12/14/18 08:45am Tech Issues
RE: Riddle Me This Batman; Low Frequency Hum: SOLVED

Hidden water leak. Go to the street and turn off valve after your water meter. Good point; I'll do that when the hum comes back. But if it was a water leak, it's odd the hum is not happening right now.
Ron3rd 12/14/18 08:41am Tech Issues
RE: Riddle Me This Batman; Low Frequency Hum: SOLVED

We have an automatic thermostat controlled attic fan that makes a low hum that changes/goes away in different parts of the house. Do you have one powered by some breaker that's not getting turned off? Is the hum caused by the roar of the burner in your gas water heater? Could it be the wind blowing through your home's crawl space that's allowed due to the outside wall ventilation vents in the crawl space? Do you have automatic outside sprinklers that may be coming on ... sometimes water running in pipes under the house as they feed outside faucets/valves can almost make a humming sound in the pipes? Is the step-down power transformer on the power pole that feeds your house humming? I've ruled out all of that; The hum occurs when the water heater is off; the sprinklers only come on 3 times a week in the early morning; there are no power poles in the neighborhood. I considered the wind blowing through an outside bathroom exhaust vent, creating a harmonic in the exhaust pipe. I sealed off the vent with masking tape temporarily so no air could get in and it made no difference. I really don't think it is wind related though I considered that. The pattern of when it occurs does not seem related to any wind movement. I've realized it's more prevalent in the afternoon and rarely occurs in the morning, though it has in the past. It's 7:30 am right now and it's silent in the bedroom. Seems like it was louder than usual yesterday afternoon. Neighbors on the other side of our block wall in the back yard have a pool and you can hear the pump running from time to time but when the pump is off, the hum is still there. Somebody mentioned something about a Fire Station and we do have one about 3/4 of a mile away.
Ron3rd 12/14/18 08:40am Tech Issues
RE: Riddle Me This Batman; Low Frequency Hum: SOLVED

Doorbell transformer? I turned off all the power to the house. Still there
Ron3rd 12/13/18 09:45pm Tech Issues
RE: Riddle Me This Batman; Low Frequency Hum: SOLVED

Turning the electric off eliminates a lot of possibilities. It has to be harmonic unless it's generated from off site and only being picked up in that particular spot. Any wind turbines, factory, power plants, etc. nearby? None nearby. And it's very localized to about half of the room
Ron3rd 12/13/18 09:24pm Tech Issues
RE: Riddle Me This Batman; Low Frequency Hum: SOLVED

It's constant. Never goes away. I can't rule out some sort of harmonic but can't see what could cause it.
Ron3rd 12/13/18 08:57pm Tech Issues
Riddle Me This Batman; Low Frequency Hum: SOLVED

...in the sticks and bricks that is. In one of our rear bedrooms, if you stand in a certain spot, there is a low frequency hum that can be heard. Drives the wife crazy. Not loud, but a soft hum. Sounds like some sort of electrical hum and I can't tell where it's coming from. In that part of the house, there is nothing in the attic and nothing unusual in the walls. To see if it was something hidden and electrical, I turned off the power to the house. The hum is still there. What say you Batman?
Ron3rd 12/13/18 08:41pm Tech Issues
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