7 years ago. damn

Channelling Ligeti! Nice work!

This is how drummers hear the metronome.

@paulwhitelaw7131

2 жыл бұрын

singers more like lol

Wow! great work! ... "stunning"! 🌟

Thanks for sharing. Really like this sculpture. Going to use it as inspiration for my own projects.

Tickled my brain

I would like to know about the materials of this device, including wood, balls, iron pillars and I would like to know the design concept

@pauldresher2007

8 ай бұрын

The "flower" itself is made from 5/16" multi-ply birch plywood with a 3/4" base of the same plywood. The legs are made from steel rods, spring steel being the best but other steel alloys work as well. (You cannot use aluminum or brass rod, it bends too easily). The thickness of the legs can range from 5/32" to 7/32"" (3/16" is most typical) , with thicker yielding a faster oscillation. Length of the legs are highly variable, from around 22" to 46", longer legs = slower oscillation. The balls on the inside can be a hardwood ball (1" - 1 &1/4" diameter), steel ball bearings (1") or delrin balls (1"). In order to have the ball strike the sides of the "flower" in an optimal position, we construct a "track" that raises the ball up so that it strikes the flower near the top. This track can be made of wood or aluminum but is a little hard to describe in words. The track sits on a post that if wood, is glued into the flower base, or if threaded rod, is bolted through the bottom of the flower (none of those are in this video, that was a later design improvement. The track's job is to allow the ball to smoothly roll back and forth, striking the sides near the top, which is the optimal place in terms of sound production. If you want a slower oscillation on a given length of leg and mass of flower, if you symetrically add weight to the bottom of the flower, you slow down the oscillation. We typically do this with rectangular brass pieces. The trickest part of the design is tuning the flower. The important task here is to cut a slot on the widthwise sides of the flower in order to bring the mechanical vibration frequency of the flower into a 2nd or minor third of the resonant frequency of cavity inside the flower. We have never figured out a formula for this but probably Helmholtz did back in the mid-19th century. We do it by trial and error, gradually cutting the slot deeper into the sides (typically a little past the half way of the depth of the flower) until the flower becomes sonically "alive". There isn't a better way to describe it. If you cut too deep and go past the resonant area, you can cut off the TOP of the flower, raising the pitch of the mechanical vibration of the flower. I hope this helps.

@Box-br9yq

7 ай бұрын

​@@pauldresher2007 Thank you very much for providing this information. This sound device is really interesting. I will try to make one if I have a chance!

@AnkurPandeyef

5 ай бұрын

Thanks for this excellent and generous sharing, and ofc the beautiful creation ​@@pauldresher2007 🙏🏽❤

Oh God yes

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Its the same logic of Ligeti about the 100 meteonomos. Autopietic of time

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Kinda reminds me of "Nero's Day At Disneyland - Stretched Linen Over Contorted Bodies" :/

juas juas

No sabo inglish

_do you know da wae_

@driftliketokyo34ftw35

4 жыл бұрын

Nice

@koreypenn1707

Ай бұрын

Oh my god thankyou I’m. It the only one who’s brain has been ruined

@LektrisMeBoy

Ай бұрын

The rot consumes

Sounds like a heated political debate in the Congo.

Clickers

Dumb