321–330 of 344 posts
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Berlin has some absolutely beautiful church bells. The overtones and reverb from all the walls are so chilling, it makes you feel like you're inside the bells or something. I recorded one of them: https://sndup.net/2h7t/St+Joseph+Kirche.m4a
Guy from Berlin here. Isn't this how church bells are supposed to sound? Do they sound different in other places?
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Here's a video from the company that built the new handrail: https://www.youtube.com/watch?v=N-XCbsyRENI From your article: "The wind retrofit project is designed to make the Bridge more aerodynamic under high wind conditions and is necessary to ensure the safety and structural integrity of the Bridge for generations to come,” Cosulich-Schwartz said." This statement doesn't agree with the video's rationale for updati…
I'm kinda curious what the rational of the net is. If you're determined to jump off the bridge, you can jump off the net too.
There should be an app for this. To get direction and location, you need acoustic samples from multiple widely-spaced locations, all synchronized. Human ears are not wide enough apart to directionalize low frequencies, but with a baseline of tens or hundreds of meters from separate cell phones, it's not hard. Run a correlator, line up the samples, compute the hyperbolas of constant time offset, (like GPS and LORAN) a…
A solution like this could resolve many of the lingering "hum" cases. Often they are only heard by a few people, and those in charge of environmental control don't tend to take it seriously because "they don't hear it", or because they or the higher-ups are hiding something.
Acoustic consultants are extremely expensive, may require many hours if the sound is only apparent during random hours, and even then may come up with nothing.
An app that would at least be able to give a good estimate of the direction from where a sound is coming would be extremely helpful.
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In the marinas you have limited maneuvering space and with sails you are limited in which directions you can go - directly against the wind is not possible, you need to zig-zag. Slowing is also a bit more difficult. To add to trouble, marines are often built in places with less wind (of course) and wind might change direction during landing. Note that it's still quite possible, just more challenging, risky too I gues…
Extending this comment, before motors it was routine to have to wait for favourable winds, especially in harbours and confined waterways. Here's the famous navigator James Cook setting out from London on his second voyage: "I sailed from Deptford, April 9th, 1772, but got no farther than Woolwich, where I was detained by easterly winds till the 23d, when the ship fell down to Long Reach, and the next day was joined b…
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IANAPlumber but the "water hammer" effect is usually very immediate and short. It literally sounds like a hammer hitting something. What you're describing might be along the same principles but much larger, or it might be something else, but in any event it sounds serious. (No pun intended.) Get a second opinion before a pipe bursts or comes loose, eh? If by "the outside hydrant" you mean a fire hydrant then I would…
Not a hammer sound, absolutely. An humming, thrumming sound. Rises and falls and a trailing off with a duration of 5 seconds.
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Lots of good things about the lockdown from the aspect of peace, quiet, nature, clean air, reduced light pollution, and more. It just comes at a cost that society isn’t willing to bear.
https://xkcd.com/2305/
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every musician ever: A440 PROVEN BY THE BRIDGE
In tuning systems what one really cares about is the ratio between pitches, not the frequency of a specific note. You could have A=440 and tune to just intonation and that would sound different from A=440 and 12 tone equal-temperament.
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Same think was driving me nuts in the BWCA, camping in areas where there should not be any engines. Came back all salty that someone must have a gas powered well or something. Outfitter said I should find a recording of a horny grouse... and I'll be damned, that was it beating its wings. Last trip over Memorial weekend we had one nearby, and it brought nothing but smiles.
So how has this affected your life since? Did you stop assuming things more? Do you like the sound of lawn mowers because they sound like a natural sound?
Headed back up there in a couple days. Hope to hear the grouse pounding their wings, the moose walking through the water, and a wolf howling away.
I tried making a spectrogram: https://twitter.com/nibot/status/1269347206445756416 I tried using baudline[1] (a 20-year-old program!) but it didn't work out-of-the-box on my current Linux installation. Instead I found something called Sonic Visualizer[2], which, while not real-time, worked out of the box. Using Pulse Audio 'pavucontrol' it was easy to configure Sonic Visualizer to use as its input the 'monitor' chann…
What errors are you getting? You're right it doesn't work OOTB, I needed to fiddle with it a bit.