4 ms·
I heard that these small holes are supposed to be Helmholtz Resonators. If tuned to the right frequency, they can help with noise reduction. https://hackaday.c
by deutschepost 3y ago
I heard that these small holes are supposed to be Helmholtz Resonators. If tuned to the right frequency, they can help with noise reduction.
https://hackaday.com/2023/12/24/absorbing-traffic-noise-with-bricks-using-helmholtz-resonators/ https://hackaday.com/2023/12/24/absorbing-traffic-noise-with...
- nuc1e0n 3y agoWith holes like that, birds, bees and rats will nest in those bricks.
- pavel_lishin 3y agoI bet birds make excellent noise-absorbers.
- ametrau 3y agoRats also
- adolph 3y agoProbably clean up discarded biological matter pretty well. Rats have decent cognitive capabilities. I wonder if trained cleaning rats would displace the naughty variety. https://www.theguardian.com/environment/2022/feb/01/swedish-crows-pick-up-cigarette-butts-litter https://www.theguardian.com/environment/2022/feb/01/swedish-...
- nuc1e0n 3y agoWild rats aren't naughty. They're just animals trying to make their way in the world the same as the rest of us. But they do make a mess and carry diseases, again maybe the same as the rest of us lol.
- adolph 3y agoAgreed, my use of “naughty” is to acknowledge that rats in a relatively natural state have some characteristics deleterious to close human habitation.