Itekhnoloji ephambili yokwandisa iaudio kukufota okanye ukuhluza indawo.Inokutshintsha isalathiso sokurekhodwa komsindo (oko kukuthi, iva ulwalathiso lomthombo wesandi) kwaye iyilungelelanise njengoko kufuneka.Kule meko, elona cala lifanelekileyo yipatheni ye-supercardioid (echazwe ngezantsi), ephucula isandi esivela ngaphambili (oko kukuthi, icala elijonge ngqo kwikhamera), ngelixa isandi sithomalalisa sivela kwezinye iindlela (ingxolo yangasemva).).
Isiseko sale teknoloji kukuba kuyimfuneko ukuseta i-microphone ye-omnidirectional kangangoko kunokwenzeka: i-microphone ezininzi kunye nokude, isandi esingaphezulu sinokurekhodwa.Xa ifowuni ixhotyiswe ngee-microphone ezimbini, zihlala zibekwe phezulu nasezantsi ukuze kwandiswe umgama phakathi komnye nomnye;kwaye imiqondiso ethathwe yi-microphone iya kuba yeyona ndlela ilungileyo yokwenza i-supercardioid directivity.
Umfanekiso ongasekhohlo lurekhodisho oluqhelekileyo lomsindo;i-audio zoom kumfanekiso osekunene ine-directivity ye-supercardioid, enovakalelo ngakumbi kumthombo ekujoliswe kuwo kwaye inciphisa ingxolo yangasemva.
Isiphumo solu khokelo luphezulu lufunyanwa kusetyenziswa umamkeli ongekho mkhombandlela ngokuseta iinzuzo ezahlukeneyo kwiqela ngalinye lemakrofoni kwindawo ezahlukeneyo kwifowuni, emva koko ushwankathela izigaba zezipikhi zokuphucula isandi esifunwayo kunye nokutshabalalisa i-wave yecala ukunciphisa. uphazamiseko olungekho kwi-axis.
Ubuncinane, kwithiyori.Ngapha koko, ukwenza ukukhanya kwii-smartphones kuneengxaki zako.Ngakolunye uhlangothi, iiselfowuni azikwazi ukusebenzisa iteknoloji ye-microphone ye-condenser efunyenwe kwii-studios ezinkulu zokurekhoda, kodwa kufuneka isebenzise i-electret transducers-miniature MEMS (i-micro-electro-mechanical systems) ii-microphone ezifuna amandla amancinci kakhulu ukuba asebenze.Ngaphaya koko, ukuze kunyuswe intelligibility kwaye ulawule ubume bezinto ezibonakalayo kunye nezexeshana ezenzeka ngokucoca indawo (njengokugqwetheka, ilahleko ye-bass, kunye nesandi esipheleleyo esinokuphazamiseka kwesigaba esibi / ukukhala), abavelisi be-smartphone akufuneki baqwalasele ngononophelo ukubekwa kweMicrophone, kakhulu. , kufuneka ithembele kwindibaniso yayo eyodwa yeempawu zesandi, ezifana nezilinganisi, ukubhaqwa kwelizwi, kunye namasango engxolo (nawona ngokwawo anokubangela izinto zakudala ezivakalayo).
Ngoko ke, ngokwengqiqo, umenzi ngamnye unendlela yakhe ekhethekileyo yokwenza i-beamforming kudityaniswe neteknoloji yobunini.Oko kuthethiweyo, ubuchule obuhlukeneyo bokubethelela bunamandla ayo, ukusuka kwintetho yokususa umva ukuya ekunciphiseni ingxolo.Nangona kunjalo, i-algorithms ekhanyayo inokukhulisa ngokulula ingxolo yomoya kwi-audio erekhodiweyo, kwaye ayinguye wonke umntu onako okanye ofuna ukusebenzisa i-windshield eyongezelelweyo ukukhusela i-MEMS.Kwaye kutheni iimakrofoni kwii-smartphones zingasebenzi ngakumbi?Ngenxa yokuba oko kubeka esichengeni impendulo rhoqo kunye novakalelo lwemakrofoni, abavelisi badla ngokuthembela kwisoftware ukunciphisa ingxolo kunye nengxolo yomoya.
Ukongeza, akunakwenzeka ukulinganisa ingxolo yokwenyani yomoya kwindawo ye-acoustic yendalo phantsi kweemeko zebhubhoratri, kwaye ukuza kuthi ga ngoku akukabikho sisombululo silungileyo sokujongana nayo.Ngenxa yoko, abavelisi kufuneka baphuhlise ubugcisa obukhethekileyo bedijithali bokhuselo lomoya (obunokuthi busetyenziswe nokuba imveliso iyinyino yoyilo lwemveliso) ngokusekelwe kuvavanyo lwesandi esirekhodiweyo.INokia ye-OZO Audio Zoom irekhoda isandi esincediswa bubuchwephesha bokumelana nomoya.
Njengokurhoxiswa kwengxolo kunye nezinye iindlela ezininzi ezidumileyo, ukwenza i-beamforming kwaphuhliselwa iinjongo zasemkhosini.Uluhlu lothumelo lwenqanaba lwasetyenziswa njengeeriyali zeradar ngexesha leMfazwe yesibini yeHlabathi, kwaye namhlanje zisetyenziselwa yonke into ukusuka kwimifanekiso yezonyango ukuya kwimibhiyozo yomculo.Ngokubhekiselele kwii-microphone arrays, zaqanjwa kwi-70s nguJohn Billingsley (hayi, kungekhona umdlali odlala uDkt Volash kwi-Star Trek: Enterprise) kunye noRoger Kinns.Nangona ukusebenza kobu buchwepheshe kwii-smartphones khange kuphuculwe kakhulu kule minyaka ilishumi idlulileyo, ezinye ii-handsets zinobukhulu obugqithisileyo, ezinye zineseti ezininzi zeemakrofoni, kwaye ezinye zinee-chipsets ezinamandla ngakumbi.Ifowuni ephathwayo ngokwayo inomgangatho ophezulu, okwenza iteknoloji yokusondeza i-audio isebenze ngakumbi kwizicelo ezahlukeneyo zomsindo.
Kwiphepha likaN. van Wijngaarden ne-EH Wouters elithi “Ukuphucula Isandi Ngokuqaqambisa Ngokusebenzisa Iimfonomfono” lithi: “Kuthi qatha engqondweni into yokuba amazwe (okanye iinkampani) ezibek’ esweni zinokusebenzisa ubugcisa obuthile bokwenza imisebe ukuze zihlole bonke abemi .Kodwa ukusa kumlinganiselo wokubekw’ esweni ngabantu abaninzi. , ingakanani impembelelo enokuba nayo inkqubo yokuqaqamba kwe-smartphone?[…] Ngokwethiyori, ukuba itekhnoloji ikhula ngakumbi, inokuba sisixhobo kwindawo yokucupha, kodwa isekude kakhulu.Itekhnoloji yokukhanya eqaqambileyo kwii-smartphones iseyindawo engachazwanga, kwaye ukunqongophala kwetekhnoloji engathethiyo kunye neendlela ezingabonakaliyo zongqamaniso kunciphisa ithuba lokumamela ngokufihlakeleyo.
Ixesha lokuposa: Jun-14-2022
