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New slats make the Golden Gate Bridge sound like a David Lynch movie

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Re: New slats make the Golden Gate Bridge sound like a David Lynch movie

#61

Check out The Singing Ringing Tree art exhibit: https://youtu.be/4B0hGyKV9qs?t=12

With the clouds in the background in the video and the shape of the installation, my first thought on how to describe it would be a tornado rather than a tree. Maybe growing up in Tornado Alley predispositions me that way. I could see it as some sort of storm warning setup, steampunk style.

Re: New slats make the Golden Gate Bridge sound like a David Lynch movie

#62
post #29

"In the future the most valuable thing will be silence" --Voltaire

He went on to say "check out this sweet deal I got on these sony WH-1000XM3's via my Amazon afilliate link below. Don't forget to smash that like and subscribe for future philosophical updates."

To be fair, the Sony WF-1000XM3's are awesome and I love mine. Living in a big city is so much more pleasant with noise canceling. It can be surprising to take them off and realize how loud the environment around me actually is.

Re: New slats make the Golden Gate Bridge sound like a David Lynch movie

#64
post #24
post #14

I'm just glad they identified the source of the hum, many people are impacted for years by unexplainable sounds, and it is maddening. It took me and my neighbours a month to find the source of a hum that was resonating with our windows. It was torture, with midnight walks and lurking around potential sources, mapping nearby industrial sites, and questioning our sanity, while our windows were vibrating without a stop.…

Two unrelated anecdotes: 1. A few years ago I spent some time in Falmouth, MA and there was an ongoing battle over newly installed wind turbines. The humming sound was getting to people, including to the point where they were getting headaches. Some people heard it and others didn't. The locals were going to war with the initiative. This article reminded me of that and I checked in on the ordeal. Looks like they shut…

Your description reminded me of a similar sound on my first night on anchor with my first chartered yacht. Turns out it was a fan in our inverter that was somehow switched on and it completely drained both our batteries (wrong installation) overnight so we couldn't lift the anchor nor start the engine in the morning

Re: New slats make the Golden Gate Bridge sound like a David Lynch movie

#65
post #24

Earlier quoted context omitted.

Two unrelated anecdotes: 1. A few years ago I spent some time in Falmouth, MA and there was an ongoing battle over newly installed wind turbines. The humming sound was getting to people, including to the point where they were getting headaches. Some people heard it and others didn't. The locals were going to war with the initiative. This article reminded me of that and I checked in on the ordeal. Looks like they shut…

2) It's amazing how perspective changes with more information. It is very odd how much that sounds just like a mower having difficulty starting, and is exactly the conclusion I would have jumped to it being. Glad you were able to get a better answer.

Yeah, I thought it was a generator or mower at first. It's just quiet enough that I mistook it for a much louder sound that had grown faint due to my distance from the source.

Re: New slats make the Golden Gate Bridge sound like a David Lynch movie

#66
post #24
post #14

I'm just glad they identified the source of the hum, many people are impacted for years by unexplainable sounds, and it is maddening. It took me and my neighbours a month to find the source of a hum that was resonating with our windows. It was torture, with midnight walks and lurking around potential sources, mapping nearby industrial sites, and questioning our sanity, while our windows were vibrating without a stop.…

Two unrelated anecdotes: 1. A few years ago I spent some time in Falmouth, MA and there was an ongoing battle over newly installed wind turbines. The humming sound was getting to people, including to the point where they were getting headaches. Some people heard it and others didn't. The locals were going to war with the initiative. This article reminded me of that and I checked in on the ordeal. Looks like they shut…

Just across Buzzards Bay from Falmouth was the original Marconi transmitting station for transatlantic communication to a receiver in Norway. My great-grandfather helped build it in 1914! At the time it was the most powerful transmitter in the world at 300 kW. There were 14 440-foot towers in a grid, and it was so powerful that apparently anywhere in town you would get zapped while hanging out the laundry on a clothesline, and you couldn't get a TV signal in town until the towers stopped operating. To avoid interference the receiver had to be located 40 miles away in Chatham.

Re: New slats make the Golden Gate Bridge sound like a David Lynch movie

#67
post #64
post #24

Earlier quoted context omitted.

Two unrelated anecdotes: 1. A few years ago I spent some time in Falmouth, MA and there was an ongoing battle over newly installed wind turbines. The humming sound was getting to people, including to the point where they were getting headaches. Some people heard it and others didn't. The locals were going to war with the initiative. This article reminded me of that and I checked in on the ordeal. Looks like they shut…

Your description reminded me of a similar sound on my first night on anchor with my first chartered yacht. Turns out it was a fan in our inverter that was somehow switched on and it completely drained both our batteries (wrong installation) overnight so we couldn't lift the anchor nor start the engine in the morning

how did you get out of that one?

Re: New slats make the Golden Gate Bridge sound like a David Lynch movie

#68
post #24

Earlier quoted context omitted.

Two unrelated anecdotes: 1. A few years ago I spent some time in Falmouth, MA and there was an ongoing battle over newly installed wind turbines. The humming sound was getting to people, including to the point where they were getting headaches. Some people heard it and others didn't. The locals were going to war with the initiative. This article reminded me of that and I checked in on the ordeal. Looks like they shut…

Geez, I'm torn on number one, since obviously locals should be able to live in peace, but the world is in such incredibly dire need of clean energy. Surely this was an issue with these specific turbines, right? Not a problem with all of them?

Low-grade humming is exhausting anyway. That's one of the reasons people are so tired after a long plane flight, despite just sitting there.

Giant stationary installations with very loud noises tend to cause weird noise issues. It's a lot of unfocused, or weirdly focused sonic energy that can't be heard from a little further away, but at exactly the right (well, wrong) place, it can get re-focused, leading to a droning noise that starts and stops unexpectedly. A good example that shows this phenomenon is real, despite being invisible is the Listening Vessels[0] exhibit at the Exploratorium or similar, with two giant parabolic sound reflectors.

For the wind farm, the issue isn't just turbines, but that specific turbine, down to the serial number and the serial number plate, at that exact location, temperature, humidity, causing a resonance in a specific resident's door, miles away. The resident may be able to replace, eg, the door, but often there are factors outside of the resident's control that contribute to the issue. Like the siding on the neighbor's house, or where their car is parked.

Ideally an acoustical consultant would be brought in during the design stage (just like SREs should be brought in during the design phase of a new service and not 5 minutes before it goes live), but that almost never happens, as we see (well hear) here.

At least in this case the noise can be heard by everybody. Imagine this noise coming off the bridge, but it's only audible from your bedroom Tuesdays when its cloudy. And none of your neighbors can hear it. You'd think you'd gone mad!

[0] https://www.exploratorium.edu/exhibits/listening-vessels

Re: New slats make the Golden Gate Bridge sound like a David Lynch movie

#69
post #24
post #14

I'm just glad they identified the source of the hum, many people are impacted for years by unexplainable sounds, and it is maddening. It took me and my neighbours a month to find the source of a hum that was resonating with our windows. It was torture, with midnight walks and lurking around potential sources, mapping nearby industrial sites, and questioning our sanity, while our windows were vibrating without a stop.…

Two unrelated anecdotes: 1. A few years ago I spent some time in Falmouth, MA and there was an ongoing battle over newly installed wind turbines. The humming sound was getting to people, including to the point where they were getting headaches. Some people heard it and others didn't. The locals were going to war with the initiative. This article reminded me of that and I checked in on the ordeal. Looks like they shut…

RE: #2. I remember the first time I heard that sound when I moved from the city to the woods of NH. I thought someone was trying to crank up some kind of motor, too. Then I eventually caught a glimpse of a ruffed grouse doing its thing. Neat.

Re: New slats make the Golden Gate Bridge sound like a David Lynch movie

#70
post #24
post #14

I'm just glad they identified the source of the hum, many people are impacted for years by unexplainable sounds, and it is maddening. It took me and my neighbours a month to find the source of a hum that was resonating with our windows. It was torture, with midnight walks and lurking around potential sources, mapping nearby industrial sites, and questioning our sanity, while our windows were vibrating without a stop.…

Two unrelated anecdotes: 1. A few years ago I spent some time in Falmouth, MA and there was an ongoing battle over newly installed wind turbines. The humming sound was getting to people, including to the point where they were getting headaches. Some people heard it and others didn't. The locals were going to war with the initiative. This article reminded me of that and I checked in on the ordeal. Looks like they shut…

1 Modern CFD techniques enable almost silent blades. If a $10 computer fan can have special dimples/channels why cant wind turbines

https://www.quietpc.com/nf-a12x25-5v

https://cougargaming.com/us/products/cooling/cfd_red_led_fan...

https://aerocool.io/us/product/silent-master-blue-20cm/

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