I-audio engenacingo kukukwazi ukumamela umculo ngaphandle kweengcingo phakathi kwezithethi zakho kunye nenkqubo yakho ye-stereo. Yiteknoloji esebenzisa amaza erediyo ukusasaza isiginali yomsindo ukusuka kumthombo ukuya kwizithethi. Ikwabizwa ngokuba yi-wireless fidelity okanye izithethi zeWi-Fi.
Kweli nqaku, ndiza kuchaza ukuba isebenza njani kwaye kutheni isiya ithandwa kakhulu.
Izithethi Ezingenazingcingo: Zisebenza Njani?
Indlela ye-Infrared
Izithethi ezingenazingcingo azinaqhagamshelo oluthe ngqo kwinkqubo yestereo okanye omnye umthombo. Endaweni yoko, inkqubo kufuneka ithumele umqondiso wokuba izithethi zinokuthatha kwaye zijike zibe ngumbane ukunika amandla ikhoyili yelizwi ngaphakathi kwisithethi. Kwaye kukho indlela enye yokuyenza: imiqondiso ye-infrared. Kufana nokuba zisebenza njani izilawuli kude. Inkqubo ye-stereo ithumela ukukhanya kwe-infrared, engabonakaliyo ngeso lenyama. Lo mqadi uthwala ulwazi ngohlobo lwee-pulses, kwaye izithethi ezingenazingcingo zinezinzwa ezinokubona oku kuhanjiswa.
Nje ukuba inzwa ibone umqondiso, ithumela imiqondiso yombane kwiamplifier. Le amplifier yandisa amandla emveliso yenzwa, efunekayo ukuqhuba i-coil yezwi kwisithethi. Emva koko, umsinga otshintshanayo ubangela ukuba i-electromagnetic yelizwi itshintshe i-polarity ngokukhawuleza. Oku ke, kubangela ukuba idiaphragm yesithethi ingcangcazele.
Iingxaki
Ukusebenzisa imiqondiso ye-infrared kwizithethi ezingenazingcingo kunezinye iingxaki. Ngomnye, i-infrared beam idinga indlela ecacileyo esuka kwi-stereo system ukuya kwisithethi. Nantoni na evala indlela iya kuthintela isignali ekufikeleleni kwisithethi kwaye ayiyi kwenza nasiphi na isandi. Ukongeza, iisignali ze-infrared zixhaphake kakhulu. Izinto ezifana nolawulo olukude, izibane, kunye nabantu bakhupha imitha ye-infrared, enokubangela ukuphazamiseka kwaye yenze kube nzima kwisithethi ukubona umqondiso ocacileyo.
Iimpawu zikanomathotholo
Kukho enye indlela yokuthumela imiqondiso ngaphandle kwamacingo: unomathotholo. Imiqondiso kanomathotholo ayifuni mgca wokubonwayo, ke akufuneki ube nexhala malunga nantoni na evala indlela. Kwaye, iisignali zikanomathotholo azifane ziphazamiseke, ngoko ke unokuwonwabela umculo wakho ngaphandle kokuphazamiseka okanye ukungangqinelani.
Isikhokelo sabaQalayo kuMaza oMthwali kunye neMiqondiso yokuModareyitha
Yintoni i-Carrier Waves?
Amaza okuthwala ngamaza e-electromagnetic amodareyithwa ngophawu olunolwazi losasazo olungenazingcingo. Oku kuthetha ukuba bathwala amandla ukusuka kwenye indawo ukuya kwenye, njengobushushu kunye nokukhanya okuvela kwiLanga ukuya eMhlabeni, okanye isandi somsindo esivela kwi-transmitter ukuya kwi-headphone receiver. Amaza okuthwala ahlukile kumaza esandi, angamaza omatshini, kuba anokuhamba nge-vacuum kwaye awanxibelelani ngokuthe ngqo neemolekyuli zesiphakathi.
Yintoni imiqondiso ehlengahlengisayo?
Imiqondiso yokumodareyitha isetyenziselwa ukumodareyitha isiginali yomthwali, kwaye ngokuyinyani imiqondiso yomsindo eyenzelwe abaqhubi be-headphone. Kukho iindlela ezininzi apho isiginali yokumodareyitha inokumodareyitha igagasi lomthwali, njenge frequency uhlengahlengiso (FM). I-FM isebenza ngokuba nesiginali yokumodareyitha imodareyitha ukuphindaphindwa kwamaza ophetheyo.
Wireless Analog Audio Transmission
Ii-headphones ezingenazingcingo zihlala zisebenza kufutshane ne-2.4 GHz (ifrikhwensi yerediyo), ebonelela ngoluhlu olukhulu lwamacingo ukuya kuthi ga kwi-91 m (300 ft). Ukugcina umahluko kwi-frequency ye-carrier wave iphantsi kwaye imfutshane, isiginali ye-audio ikhuliswa kuphela xa umamkeli we-headphones eyichithile. Umsindo we-stereo uthunyelwa ngokuphindaphinda kunye nokuphindaphinda ngaphambi nasemva kwenkqubo yokumodareyitha rhoqo.
Wireless Digital Audio Transmission
Irediyo yedijithali yenziwe ngokukhawuleza ngokukhawuleza kwe-amplitude yesignali yomsindo kwaye imelwe ngedijithali. Umgangatho womsindo wedijithali unokuchazwa ngesantya sesampulu kunye nobunzulu. Ireyithi yesampulu ibhekisa ekubeni zingaphi iiamplitudes zeaudio ezithathwe kwisekondi nganye, kwaye ubunzulu be-bit bubhekisa ekubeni zingaphi amasuntswana asetyenziswayo ukumela iamplitude yayo nayiphi na isampulu enikiweyo.
isiphelo
Ke, ukuyishwankathela, amaza okuthwala ngamaza ombane athwala amandla ukusuka kwenye indawo ukuya kwenye, kwaye imiqondiso yokumodareyitha isetyenziselwa ukumodareyitha umqondiso ophetheyo, othi ke udluliselwe kumamkeli wentloko. Wireless analog audio transmission lwenziwa ngokumodareyitha frequency, kunye wireless digital audio transmission kwenziwa ngokusebenzisa imiqondiso audio yedijithali.
Ukuqonda iHlabathi leMiqondiso yoSasazo
Iziseko zeRadio Waves
Amaza onomathotholo ayinxalenye yespectrum ye-electromagnetic, kunye nokukhanya kunye ne-infrared. Ukukhanya okubonakalayo kunobude obungama-390 ukuya kuma-nanometer angama-750, ngelixa ukukhanya kwe-infrared kunoluhlu olude lwe-0.74 ye-micrometer ukuya kwii-300 ze-micrometer. Amaza kanomathotholo, nangona kunjalo, ngawona makhulu, anoluhlu lwamaza oluyi-1 millimeter ukuya kwi-100 yeekhilomitha!
Amaza kanomathotholo aneengenelo ezimbalwa ngaphezu kwezinye iintlobo zemitha ye-electromagnetic, kodwa adinga amacandelo ambalwa ukusuka kwinkqubo ye-stereo ukuya kwisithethi. Isidlulisi esiqhagamshelwe kwinkqubo yestereo siguqula imiqondiso yombane ibe ngamaza erediyo, athi ke asasazwe ngaphandle kwi-eriyali. Kwelinye icala, i-eriyali kunye nesamkeli kwisithethi esingenazingcingo zibhaqa isignali yerediyo, iyiguqulela ekubeni sisignali yombane. Isandisi-lizwi ke sonyusa amandla omqondiso ukuqhuba isithethi.
Iifrikhwensi zikanomathotholo kunye nophazamiseko
Amaza omoya zibalulekile kuba usasazo lukanomathotholo olusebenzisa amaza afanayo lunokuphazamisana. Oku kunokuba yingxaki enkulu, ngoko ke amazwe amaninzi amisele imithetho enciphisa iintlobo zeefrikhwensi zerediyo ezahlukeneyo ezivumelekileyo ukuba zivelise. EUnited States, iibhendi zeefrikhwensi ezabelwe izixhobo ezinjengezithethi ezingenazingcingo ziquka:
- 902 ukuya 908 megahertz
- 2.4 ukuba 2.483 gigahertz
- 5.725 ukuba 5.875 gigahertz
La maza angaphazamisani nonomathotholo, umabonakude, okanye imiqondiso yonxibelelwano.
Umgaqo weBluetooth
IBluetooth yiprotocol evumela izixhobo ukuba ziqhagamshelane. Oku kuthetha ukuba izithethi ezingenazingcingo zinokuba nolawulo olungaphaya kwevolumu kunye namandla. Ngonxibelelwano lweendlela ezimbini, unokulawula ukuba yeyiphi ingoma edlalayo okanye yeyiphi isikhululo sikanomathotholo inkqubo yakho idityaniswe ngaphandle kokuba uphakame uyitshintshe kwinkqubo ephambili. Ipholile kangakanani loo nto?
Yintoni uMlingo oNgasemva kweZithethi zeBluetooth ezingenazingcingo?
INzululwazi yeZandi
Izithethi zeBluetooth ezingenazingcingo zifana neyeza lomlingo leengcingo, imagnethi, kunye neecones zonke zisebenza kunye ukwenza isandi esimnandi somculo. Kodwa kwenzeka ntoni ngokwenene?
Masiyiqhekeze:
- Ucingo lwentsimbi olubhetyebhetye, olwaziwa njengekhoyili yelizwi, lutsalwa kumazibuthe owomeleleyo ngaphakathi kwisithethi.
- Ikhoyili yelizwi kunye nomazibuthe zisebenza kunye ukuze zenze iintshukumo ezichaphazela ukuphindaphinda okanye ukuphakama kwesandi.
- La maza esandi aye anyuswe nge-cone/ejikelezileyo nakwiindlebe zakho.
- Ubungakanani bekhowuni/ejikelezileyo buchaphazela umthamo wesithethi. Okukhona icone isiba nkulu, kokukhona isithethi sikhulu kwaye isandi esiphakamileyo. I-cone encinci, isithethi sincinci kwaye isandi sithule.
Umlingo woMculo
Izithethi zeBluetooth ezingenazingcingo zifana neyeza lomlingo leengcingo, imagnethi, kunye neecones zonke zisebenza kunye ukwenza isandi esimnandi somculo. Kodwa kwenzeka ntoni ngokwenene?
Masiyiqhekeze:
- Ucingo lwentsimbi olubhetyebhetye, olwaziwa njengekhoyili yelizwi, luthakathwa yimagnethi enamandla ngaphakathi kwisithethi.
- Ikhoyili yelizwi kunye nomazibuthe zenza ikhubalo ukuze zenze iintshukumo ezichaphazela ukuphindaphinda, okanye ukuphakama kwesandi.
- La maza esandi aye anyuswe nge-cone/ejikelezileyo nakwiindlebe zakho.
- Ubungakanani bekhowuni/ejikelezileyo buchaphazela umthamo wesithethi. Okukhona icone isiba nkulu, kokukhona isithethi sikhulu kwaye isandi esiphakamileyo. I-cone encinci, isithethi sincinci kwaye isandi sithule.
Ke ukuba ujonge umlingo omncinci ebomini bakho, ungajongi ngaphaya kwesithethi seBluetooth esingenazingcingo!
Imbali yeBluetooth: Ngubani owayisungulayo?
I-Bluetooth bubuchwepheshe esibusebenzisa yonke imihla, kodwa ngaba uyazi ukuba ngubani owayilayo? Makhe sijonge kwimbali yale teknoloji yenguqu kunye nomntu osemva kwayo.
Ukuveliswa kweBluetooth
Ngo-1989, inkampani yezonxibelelwano yaseSweden ebizwa ngokuba yi-Ericsson Mobile yagqiba ekubeni iyile. Banike iinjineli zabo umsebenzi wokudala itekhnoloji yerediyo ye-short-link enokuhambisa imiqondiso kwiikhompyuter zabo ukuya kwii-headsets ezingenazingcingo. Emva kokusebenza nzima, iinjineli zaphumelela kwaye umphumo waba bubuchwepheshe beBluetooth esibusebenzisa namhlanje.
Livela Phi Eli gama?
Usenokuba uyazibuza ukuba igama elithi "Bluetooth" livela phi. Ewe, ngokwenene yinxalenye yentsomi yaseScandinavia. Ngokutsho kwebali, uKumkani waseDenmark ogama linguHarald “Bluetooth” Gormsson wamanyanisa intaphane yezizwe zaseDenmark zaba sisizwe esinye esibalaseleyo. Kanye njengeteknoloji, uHarald "Bluetooth" Gormsson wakwazi "ukumanyanisa" zonke ezi zizwe kunye.
Isebenza njani iBluetooth?
Ukuba ufuna ukuqonda ukuba isithethi seBluetooth sivelisa njani isandi, kuya kufuneka uqhelane neemagnethi. Nantsi inkcazo ekhawulezayo:
- IBluetooth ithumela isignali echolwa ngumazibuthe kwisithethi.
- Imagnethi iyangcangcazela, ize idale amaza esandi.
- La maza esandi ahamba emoyeni kwaye aviwa ziindlebe zakho.
Ke unayo, isayensi emva kwezithethi zeBluetooth! Ngubani owayesazi ukuba ilula kangaka?
Yintoni i-Buzz malunga nezithethi ze-Audio ezikufuphi?
I siseko
Ke uvile malunga nezithethi ze-Near Field Audio (NFA), kodwa zimalunga nantoni? Ewe, ezi zithethi zingenazingcingo zisebenza ngenkqubo ebizwa ngokuba yi-electromagnetic induction. Ngokusisiseko, bane-transducer, leyo yindlela entle yokuthetha isixhobo esijika amandla abe ngumqondiso wombane. Ke, xa ubeka ifowuni yakho phezulu kwesi siginali, iyakhulisa isandi kwisixhobo sakho.
IBluetooth vs. Near Field Audio
Masithelekise kwaye sithelekise iBluetooth kunye nezithethi zeNFA:
- Zombini azinacingo ngokupheleleyo, kodwa izithethi ze-NFA zisebenzisa iibhetri eziqhelekileyo ukuvelisa amandla azo endaweni yemiqondiso yerediyo.
- Ngezithethi zeBluetooth, kufuneka udibanise ifowuni yakho nesithethi ukuze uve isandi. Ngezithethi ze-NFA, konke okufuneka ukwenze kukuseta ifowuni yakho phezulu kwaye ulungile ukuhamba!
Inyaniso fun
Ubusazi ukuba zonke izithethi zisebenza enkosi kwifiziksi? Ngo-1831, isazinzulu esiliNgesi esigama linguMichael Faraday safumanisa uMthetho kaFaraday wokungeniswa. Lo mthetho uthi xa umazibuthe edibana nesekethe yombane, uvelisa amandla e-electromotive, kule meko, ngamaza omsindo. Upholile, akunjalo?
Yintoni omele uyiqwalasele xa uthengela izithethi ezingenazingcingo?
ukuhambelana
Xa kuziwa kwizithethi ezingenazingcingo, kubalulekile ukuqiniseka ukuba ufumana enye ehambelana nesixhobo sakho. Jonga ibhokisi okanye ukupakishwa ukuqinisekisa ukuba iya kusebenza ngefowuni yakho okanye ilaptop.
ibhajethi
Ngaphambi kokuba uqale ukuthenga, kubalulekile ukufumanisa ukuba yimalini ozimisele ukuyichitha. Namathela kwiibrendi ezithembekileyo ezinje ngeSony, iBose, okanye iLG ukuze uqiniseke ukuba ufumana eyona bhangi yakho.
U mgangatho o
Xa kuziwa kwizithethi ezingenazingcingo, umgangatho wesandi ubalulekile. Qinisekisa ukuba ufumana enye enesandi esicacileyo, esikrwada esiza kuzalisa igumbi. Khumbula nje, ukuba uhlala eflethini, awudingi sithethi esiya kwenza iindonga zishukume.
UkuPhatha
Ubuhle bezithethi ezingenazingcingo kukuba unokuhamba nazo naphi na apho uya khona. Khangela isithethi esikhaphukhaphu, esomeleleyo esikwaziyo ukumelana namanzi ukuze ukwazi ukuya naso elwandle, epakini, okanye nakwindawo yokosa inyama engasemva kwendlu.
isimbo
Ufuna isithethi sakho esingenazingcingo silingane kunye nokuhombisa ikhaya lakho. Khetha enye engayi kuthatha indawo eninzi kwaye ayiyi kuba yindawo ekugxilwe kuyo kwigumbi.
Iindidi zezithethi
Xa kuziwa kwizithethi ezingenazingcingo, zimbini iintlobo eziphambili: iBluetooth kunye ne-Near Field Audio. Izithethi zeBluetooth zilungile kwiindawo ezinkulu, ngelixa izithethi ze-NFA zingcono kwiindawo ezincinci.
Izithethi ezenzelwe wena
Ukuba ujonge isithethi esingenazingcingo esibonakalayo, zininzi iindlela onokukhetha kuzo. Zama isithethi esincinci sedesika, isithethi sehoki puck, okanye enye elayitayo!
Ii-Pros and Cons of the Wireless Speakers
Izinzuzo
Izithethi ezingenazingcingo ziyindlela yokuhamba ukuba ujonge ukuseta okungenangxaki:
- Akusayi kuphinda kukhubeke kwiingcingo okanye ukuzama ukuzifihla!
- Ifanelekile kwiindawo ezingaphandle ezifana needekhi, iipatio, kunye namachibi.
- Akukho mfuneko yokukhathazeka malunga neentambo zamandla - izithethi ezisebenza ngebhetri ziyafumaneka.
Iingxaki
Ngelishwa, izithethi ezingenazingcingo azifiki ngaphandle kwemiqobo yazo:
- Uphazamiseko olusuka kwamanye amaza erediyo lunokubangela imiqondiso ephazamisekileyo.
- Imiqondiso eyehlisiwe inokukhokelela kumava aphantsi okuphulaphula.
- Imiba ye-Bandwidth inokukhokelela kumculo onganelanga okanye otyebileyo.
Ukungafani
Wireless Audio Vs Wired
I-audio engenacingo yindlela yekamva, enikezela lula kunye nenkululeko yokuhamba. Ngee-headphones ezingenazingcingo, akufuneki ube nexhala malunga neentambo eziphothiweyo okanye kufuneka uhlale kufutshane nesixhobo sakho. Ungajikeleza ngokukhululekileyo ngelixa umamele iingoma ozithandayo, iipodcasts, okanye iincwadi ezimanyelwayo. Kwelinye icala, ii-headphones ezineentambo zisabonelela ngomgangatho ophakamileyo wesandi, njengoko umqondiso unganyanzelwanga njengoko unjalo ngesandi esingenazingcingo. Ngaphezu koko, ii-headphones ezineentambo zihlala zifikeleleka ngakumbi kunezo zisebenza ngaphandle kwamacingo. Ke, ukuba ujonge amava esandi esikhulu ngaphandle kokwaphula ibhanki, ii-headphones ezinentambo inokuba yindlela yokuhamba. Nangona kunjalo, ukuba ujonge amava okuphulaphula alula ngakumbi, iaudio engenazingcingo yindlela yokuhamba.
isiphelo
Ngoku uyazi ukuba yintoni iaudio engenazingcingo, ungayisebenzisa ukumamela umculo, iipodcasts, kunye neaudiobooks naphi na apho ufuna khona. Ikulungele ukwenza umthambo, ukuhamba, kunye nokuzonwabisa nje.
Ungayisebenzisa ukumamela umculo, iipodcasts, kunye neaudiobooks naphi na apho ufuna khona. Ikulungele ukwenza umthambo, ukuhamba, kunye nokuzonwabisa nje.
NdinguJoost Nusselder, umseki weNeaera kunye nomthengisi womxholo, utata, kwaye ndiyakuthanda ukuzama izixhobo ezitsha ngesiginkci entliziyweni yothando lwam, kunye neqela lam, ndisenza amanqaku eblogi anzulu ukusukela ngo-2020. ukunceda abafundi abathembekileyo ngokurekhoda kunye neengcebiso zesiginci.
