Pulojekita yamawu pa "magalasi amawu" - tiyeni tiwone momwe ukadaulo umagwirira ntchito

Tikukambirana za chipangizo chotumizira mawu olowera. Imagwiritsa ntchito "magalasi omvera" apadera, ndipo mfundo yake yoyendetsera ntchito ikufanana ndi mawonekedwe a kamera.

Pa kusiyanasiyana kwa ma acoustic metamatadium

Ndi osiyana zinthu zakuthupi, mphamvu zamayimbidwe zomwe zimadalira mawonekedwe amkati, mainjiniya ndi asayansi akhala akugwira ntchito kwa nthawi yayitali. Mwachitsanzo, mu 2015, akatswiri a sayansi ya zakuthambo anakwanitsa mtundu pa chosindikizira cha 3D, "acoustic diode" - ndi njira yozungulira yomwe imalola kuti mpweya udutse, koma imawonetseratu phokoso lochokera mbali imodzi yokha.

Komanso chaka chino, mainjiniya aku America adapanga mphete yapadera yomwe imatsekereza mpaka 94% ya phokoso. Mfundo yake yoyendetsera ntchito yakhazikitsidwa Fano resonance, pamene mphamvu ya mafunde awiri osokoneza imagawidwa mofanana ndi asymmetrically. Tinakambirana zambiri za chipangizochi mu umodzi wathu nsanamira.

Kumayambiriro kwa Ogasiti, chitukuko china cha audio chidadziwika. Engineers ochokera ku yunivesite ya Sussex zoperekedwa chojambula cha chipangizo chomwe, pogwiritsa ntchito ma metamatadium awiri ("magalasi omveka") ndi kamera ya kanema, amakulolani kuyang'ana phokoso pa munthu wina. Chipangizocho chinkatchedwa “sound projector.”

Kodi ntchito

Pamaso pa gwero la mawu (wokamba mawu) pali "magalasi amawu" awiri. Ma lens awa ndi mbale yapulasitiki yosindikizidwa ya 3D yokhala ndi mabowo ambiri. Mutha kuwona momwe "magalasi" awa amawonekera developer whitepaper patsamba loyamba (muyenera kutsegula zolemba zonse).

Bowo lililonse la "audio lens" limakhala ndi mawonekedwe apadera - mwachitsanzo, zolakwika pamakoma amkati. Phokoso likadutsa m’mabowowa, limasintha gawo lake. Popeza mtunda wa pakati pa "magalasi omveka" ukhoza kukhala wosiyanasiyana pogwiritsa ntchito ma motors amagetsi, zimakhala zotheka kuwongolera phokoso kumalo amodzi. Njirayi imakumbutsanso kuyang'ana kwa kamera.

Kuyang'ana kumangochitika zokha. Izi zimachitika pogwiritsa ntchito kamera ya kanema (yodula pafupifupi $ 12) ndi ndondomeko yapadera ya mapulogalamu. Imakumbukira nkhope ya munthuyo muvidiyoyo ndikutsatira kayendedwe kake mu chimango. Kenako, dongosolo limawerengera mtunda wocheperako ndikusintha kutalika kwa projekiti molingana.

Adzagwiritsidwa ntchito kuti?

Madivelopa sangalalanikuti m'tsogolomu dongosololi likhoza kusintha mahedifoni - zipangizozo zidzaulutsa phokoso kuchokera patali molunjika m'makutu a ogwiritsa ntchito. Malo ena ogwiritsira ntchito ndi malo osungiramo zinthu zakale ndi ziwonetsero. Alendo adzatha kumvetsera nkhani zochokera ku maupangiri apakompyuta popanda kusokoneza ena. Zachidziwikire, sitingalephere kuzindikira gawo lazotsatsa - zitha kudziwitsa alendo am'sitolo za momwe amakwezera.

Koma mainjiniya akuyenerabe kuthana ndi zovuta zingapo - mpaka pano projekiti yomvera imatha kugwira ntchito pafupipafupi. Makamaka, imangosewera zolemba G (G) mpaka D (D) mu octave yachitatu ndi yachisanu ndi chiwiri.

Anthu okhala ku Hacker News nawonso onani mavuto azamalamulo omwe angakhalepo. Makamaka, padzakhala kofunikira kuwongolera kuti ndani komanso pamikhalidwe yotani azitha kulandira mauthenga otsatsa. Kupanda kutero, chipwirikiti chidzayamba m'malo ogulitsa. Monga okonza "audio projector" amanenera, nkhaniyi idzathetsedwa pang'ono ndi mawonekedwe a nkhope. Idzatsimikizira ngati munthuyo walolera kulandira zotsatsa zotere kapena ayi.

Mulimonsemo, palibe zokambidwabe zokhuza kugwiritsa ntchito ukadaulo "m'munda".

Njira zina zotumizira mawu olunjika

Kumayambiriro kwa chaka, mainjiniya ochokera ku MIT adapanga ukadaulo wotumizira mawu olunjika pogwiritsa ntchito laser yokhala ndi kutalika kwa 1900 nm. Palibe vuto ku retina yamunthu. Phokoso limafalikira pogwiritsa ntchito otchedwa Photoacoustic zotsatirapamene mpweya wa madzi mumlengalenga umatenga mphamvu ya kuwala. Chotsatira chake, kuwonjezereka kwapakati pazovuta kumachitika pamalo amodzi. Munthu amatha kuzindikira kugwedezeka kwa mpweya ndi "khutu lamaliseche".

Akatswiri ochokera ku US Department of Defense akupanga ukadaulo womwewo. Pogwiritsa ntchito laser ya femtosecond, amapanga mpira wa plasma mumlengalenga, ndipo amachititsa kugwedezeka kwa mawu mmenemo pogwiritsa ntchito nanolaser ina. Zowona, mwanjira iyi mutha kungotulutsa phokoso komanso phokoso losasangalatsa, lofanana ndi kulira kwa siren.

Pakadali pano, matekinolojewa sanachoke mu labotale, koma ma analogue awo akuyamba "kulowa" zida za ogwiritsa ntchito. Chaka chatha, Noveto kale представила choyankhulira chomwe chimapanga "makutu omvera" pamutu wa munthu pogwiritsa ntchito mafunde a ultrasonic. Chifukwa chake, kufalikira kwaukadaulo wamawu owongolera ndi nkhani yanthawi.

Zomwe timalemba mu "Hi-Fi World" yathu:

Sensa yatsopano ya akupanga ikulolani "kumvera" mabakiteriya - momwe amagwirira ntchito
Njira yotsekera mawu yapangidwa yomwe imatsitsa mpaka 94% ya phokoso - momwe imagwirira ntchito
Momwe zidutswa zapulasitiki zimasunthidwa pogwiritsa ntchito ultrasound ndi chifukwa chake zikufunika
Momwe mungasinthire PC yanu kukhala wailesi, ndi njira zina zochotsera nyimbo pakompyuta yanu. machitidwe
N’chifukwa chiyani anthu osiyanasiyana amamva mawu ofanana mosiyana?
Pali phokoso lalikulu, padzakhala phokoso lochepa: ukhondo wabwino m'mizinda
Chifukwa chiyani ma cafe ndi malesitilanti akhala akuphokoso kwambiri, nanga nditani nazo?
Momwe mungasinthire ma graph kukhala mawu, komanso chifukwa chake mukufunikira

Source: www.habr.com