Acoustic Metamaterials with Steve Cummer

Steve Cummer, professor of electrical and computer engineering at Duke University, explains the various projects he is working on to use metamaterials to manipulate sound waves.
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Duke-developed “metamaterials” are carefully designed structures that control all sorts of energy waves in previously impossible ways. Our researchers are poised to make these devices a household name.
Read the full story today:
stories.duke.edu/beyond-mater...
Learn more:
metamaterials.duke.edu/
pratt.duke.edu/
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[@russellbaston974]

Interesting to see this now and having been looking at the KEF LS50 M ( for meta!) loudspeakers, which are using meta material discs to absorb back reflections from the drive units.

[@alexeynesterovich8673]

Where can I find more information on its applicability for ultrasound?

[@AmaroqStarwind]

How about metamaterials to improve aerodynamic efficiency and stability, without compromising on other properties like lift/downforce, maneuverability, etc?

[@Sheeshening]

F1 2040 surfaces are gonna be trypophobia inducing

[@colinstephens5114]

Can this be used to create a two way sound 'mirror', reflects on one side, transmits on the other?

[@SteamPunkPhysics]

1:25 "which has the effect of slowing down sound waves that pass through that structure" Is this considered a way of accomplishing an acoustic black hole?

[@SuperMcgenius]

Wow so many uses,

[@Tyler_Lalonde-]

Yes please

[@vitorgracia5113]

So this is the workings of the terminator's mimicking vocal chords. Next up; liquid metal style.

[@sukainatuama3774]

its a beautiful teqniues

[@RennerGutierre]

Just one single frequency? What about real ambient noise?

[@JurassicJolts]

Maybe the aliens that live at the bottom of the ocean are using meta materials to make their structures undetectable

[@davidbolha]

The Abyss movie. 😄

[@johansallqvist6027]

KEF Ls50 Meta loudspeaker.

[@Naturallystated]

Please make a room that blocks city and road noise, but allows the sound of wind in the trees, birds, and nature through.

[@bestowicprimer8835]

Sound alchemy. Midas did that look at turkey Temple of Midas.

[@jurijprezelj8725]

Noise control of a single frequency? Helmholtz, and quarter wave resonator do exactly that....

[@bobsondugnutt7526]

As he mentioned, metamaterials are much more compact. Also, 3D printing would allow much better quality control over home-made designs typically employed in home theater applications.

[@skaramicke]

@@bobsondugnutt7526 how do you logically separate “home made” and “3D printing” these days? Even metal sintering machines are becoming available and for acoustics PLA is plenty.

[@chrisquinones31]

And now we have LS50 Meta

[@ALICE333]

lol his name is cummer

[@tammystewart10]

Metaverse and Meta Materials company using the same technology?

[@Sheeshening]

And here I was, thinking orchestras have beautifully sounding instruments, which sadly get their specialty drowned out by usually massive amounts of distracting reverb. The proposition, at least one of them, is to bring diffuse sound home? Sounds like a suboptimal pitch.

[@anasteriansunstrider9624]

It already exist in France...

[@hgibbons69]

please elaborate?

[@leonardobautista1619]

Where, who is doing research and what are the applications so far? Interested composer looking for an answer.

[@ScrotN]

Now I can build E.D.I.T.H(real life edition)

[@djgualtiermaldeCO]

why am i here?

[@eleones]

Really interesting but he could've done a better job explaining in layman's terms by using simpler real world examples. I barely understood the ultrasound example, despite all of his techno speak.

[@2niceunicorns562]

UAP technology. It’s only a matter of time before we are traveling the stars.

[@donepearce]

Come back when you have something to show. So far this is all "we will be able to..."

[@pebegou]

That`s how our creators started until these things became cells (: