Umsindo okungenantambo yikhono lokulalela umculo ngaphandle kwezintambo phakathi kwezipikha zakho nohlelo lwakho lwe-stereo. Kuwubuchwepheshe obusebenzisa amaza omsakazo ukusakaza isignali yomsindo kusukela emthonjeni kuya kwabakhulumayo. Kwaziwa nangokuthi i-wireless fidelity noma izipikha ze-Wi-Fi.
Kulesi sihloko, ngizochaza ukuthi isebenza kanjani nokuthi kungani isiya idume kakhulu.
Izipikha Ezingenantambo: Zisebenza Kanjani?
Indlela ye-Infrared
Izipikha ezingenazintambo azinakho ukuxhumana okuqondile kusistimu ye-stereo noma omunye umthombo. Esikhundleni salokho, isistimu kufanele ithumele isignali ukuthi izipikha zingawuthatha futhi zibe ugesi ukuze zinike amandla ikhoyili yezwi ngaphakathi kwesipika. Futhi kunendlela eyodwa yokwenza: amasignali we-infrared. Kufana nokuthi izilawuli kude zisebenza kanjani. Isistimu ye-stereo ithumela ukukhanya kwe-infrared, okungabonakali ngeso lenyama. Le nsimbi ithwala ulwazi ngendlela yama-pulses, futhi izipikha ezingenantambo zinezinzwa ezikwazi ukubona lokhu kudluliselwa.
Lapho inzwa ithola isignali, ithumela amasignali e-electronic ku-amplifier. Lesi sikhulisamandla sinyusa amandla okukhiphayo kwenzwa, okudingekayo ukuze ushayele ikhoyili yezwi kusipika. Ngemva kwalokho, umsinga oshintshanayo ubangela uzibuthe wekhoyili wezwi ukuthi ushintshe i-polarity ngokushesha. Lokhu, futhi, kubangela ukuthi i-diaphragm yesikhulumi idlidlize.
Izithiyo
Ukusebenzisa amasignali e-infrared ezipikheni ezingenantambo kunezinkinga ezithile. Kokukodwa, i-infrared beam idinga indlela ecacile esuka kusistimu ye-stereo ukuya kusipika. Noma yini evimba indlela izovimbela isignali ukuthi ifinyelele isipikha futhi ngeke yenze noma yimuphi umsindo. Futhi, amasignali e-infrared ajwayelekile kakhulu. Izinto ezifana nezilawuli kude, izibani, ngisho nabantu bakhipha imisebe ye-infrared, engase ibangele ukuphazamiseka futhi yenze kube nzima ngesipikha ukubona isignali ecacile.
Izimpawu Zomsakazo
Kukhona enye indlela yokuthumela amasignali ngaphandle kwentambo: umsakazo. Amasignali omsakazo awadingi umugqa wokubuka, ngakho-ke akumele ukhathazeke nganoma yini evimba indlela. Futhi, amasignali erediyo mancane amathuba okuthi aphazamiseke, ngakho ungajabulela umculo wakho ngaphandle kwanoma yikuphi ukuchoboza noma ukungahambisani.
Umhlahlandlela wabaqalayo kumagagasi enkampani yenethiwekhi kanye nama-Modulating Signals
Yini I-Carrier Waves?
Amagagasi enkampani yenethiwekhi amagagasi kazibuthe kagesi ashintshwa ngesignali ephethe ulwazi yokudlulisa okungenantambo. Lokhu kusho ukuthi zithwala amandla zisuka endaweni eyodwa ziye kwenye, njengokushisa nokukhanya kusuka eLangeni kuya eMhlabeni, noma isignali yomsindo isuka kumthumeli iye kumamukeli we-headphone. Amagagasi esithwali ahlukile kumagagasi omsindo, okungamagagasi emishini, ngoba akwazi ukuhamba endaweni engenalutho futhi awahlangani ngokuqondile nama-molecule we-medium.
Ayini Amasignali Ashintshayo?
Amasiginali wokumodela asetshenziselwa ukulungisa isignali yenkampani yenethiwekhi, futhi empeleni amasiginali omsindo ahloselwe abashayeli bama-headphone. Kunezindlela ezimbalwa lapho isignali yokumodela ingashintshanisa igagasi lenkampani yenethiwekhi, njenge imvamisa ukuguquguquka (FM). Ukhozi FM lusebenza ngokuba nesiginali yokumodelayo imodelise imvamisa yegagasi lomthwali.
I-Wireless Analog Audio Transmission
Ama-headphone angenantambo ngokuvamile asebenza eduze kwe-2.4 I-GHz (ifrikhwensi yomsakazo), enikezela ngobubanzi obukhulu obungenawaya obufika ku-91 m (300 ft). Ukuze ugcine ukuhluka kwefrikhwensi yegagasi yenkampani yenethiwekhi iphansi futhi imfushane, isignali yomsindo ikhuliswa kuphela uma isamukeli samahedfoni seyehlise. Umsindo we-stereo uthunyelwa ngokuphindaphinda nokuphindaphinda ngaphambi nangemuva kwenqubo yokushintsha imvamisa.
I-Wireless Digital Audio Transmission
Umsindo wedijithali yakhiwe izifinyezo ezisheshayo ze-amplitude yesiginali yomsindo futhi imelelwa ngedijithali. Ikhwalithi yomsindo wedijithali ingachazwa ngesilinganiso sesampula nokujula kancane. Isilinganiso sesampula sisho ukuthi mangaki ama-amplitude omsindo angawodwana athathwayo ngomzuzwana ngamunye, futhi ukujula kancane kubhekisela ekutheni mangaki amabhithi asetshenziswayo ukuze amele ubukhulu banoma iyiphi isampula enikeziwe.
Isiphetho
Ngakho-ke, ukukufingqa, amagagasi athwalayo angamagagasi kagesi athwala amandla esuka endaweni ethile aye kwenye, futhi amasignali ashintshayo asetshenziselwa ukulinganisa isignali yenkampani yenethiwekhi, bese idluliselwa kumamukeli we-headphone. Ukudluliswa komsindo we-analogi okungenantambo kwenziwa ngokushintshwa kwemvamisa, futhi ukudluliswa komsindo wedijithali okungenantambo kwenziwa ngamasignali omsindo wedijithali.
Ukuqonda Umhlaba Wezimpawu Zokusakaza
Izisekelo zamagagasi omsakazo
Amaza omsakazo ayingxenye ye-electromagnetic spectrum, kanye nokukhanya ne-infrared. Ukukhanya okubonakalayo kunobubanzi be-wavelength obungu-390 kuya ku-750 nanometers, kuyilapho ukukhanya kwe-infrared kunebanga elide lama-micrometer angu-0.74 kuya kuma-micrometer angu-300. Amaza omsakazo, nokho, amakhulu kunawo wonke, anebanga le-wavelength elingamakhilomitha angu-1 kuya kwangu-100!
Amaza omsakazo anezinzuzo ezimbalwa kunezinye izinhlobo zemisebe kagesi, kodwa adinga izingxenye ezimbalwa ukuze asuke kusistimu ye-stereo aye kusipika. I-transmitter exhunywe ohlelweni lwe-stereo iguqula amasignali kagesi abe amaza omsakazo, abese esakazwa othini. Ngakolunye uhlangothi, uthi, nomamukeli kusipika esingenantambo kuthola isignali yomsakazo, iyiguqule ibe isignali kagesi. Isikhulisi sibe sesithuthukisa amandla esiginali ukushayela isipika.
Amafrikhwensi omsakazo kanye nokuphazamiseka
Amaza omsakazo zibalulekile ngoba ukudluliswa kwemisakazo esebenzisa amaza afanayo kungaphazamisana. Lokhu kungaba inkinga enkulu, ngakho-ke amazwe amaningi asungule imithetho ekhawulela izinhlobo zamaza omsakazo amadivaysi ahlukahlukene avunyelwe ukuthi akhiqize. E-United States, amabhendi wamafrikhwensi anikezwe amadivayisi njengezipikha ezingenantambo ahlanganisa:
- 902 ukuze 908 megahertz
- 2.4 ukuze 2.483 gigahertz
- 5.725 ukuze 5.875 gigahertz
Lawa maza akumele aphazamise umsakazo, umabonakude, noma amasignali okuxhumana.
Isivumelwano se-Bluetooth
I-Bluetooth iyiphrothokholi evumela amadivayisi ukuthi axhumane. Lokhu kusho ukuthi izipikha ezingenantambo zingaba nezilawuli ezingaphezu kwevolumu namandla. Ngokuxhumana okubili, ungakwazi ukulawula ukuthi iyiphi ithrekhi edlalayo noma yisiphi isiteshi somsakazo uhlelo lwakho olushuthelwe kuso ngaphandle kokuthi uvuke ulushintshe ohlelweni olukhulu. Kupholile kanjani lokho?
Iyini I-Magic Behind Wireless Bluetooth Speakers?
Isayensi Yomsindo
Izipikha ze-Bluetooth ezingenantambo zifana nengxube ewumlingo yezintambo, omagnethi, nezigaxa zonke zisebenza ndawonye ukudala umsindo omnandi womculo. Kodwa kwenzekani ngempela?
Ake sihlukanise:
- Intambo yensimbi eguquguqukayo, eyaziwa ngokuthi ikhoyili yezwi, ikhangwa uzibuthe oqinile ngaphakathi kwesipika.
- Ikhoyili yezwi kanye nomazibuthe zisebenza ndawonye ukuze zenze ukudlidliza okuthinta imvamisa, noma ukuphakama komsindo.
- Lawa maza omsindo abe esekhuliswa ngekhoni/ekuzungezile nasezindlebeni zakho.
- Usayizi wekhoni/ozungezile uthinta ivolumu yesipika. Uma i-cone iba nkulu, isikhulumi siba sikhulu kanye nevolumu ephezulu. Ikhoni encane, isikhulumi siba sincane futhi ivolumu ithule.
Umlingo Womculo
Izipikha ze-Bluetooth ezingenantambo zifana nengxube ewumlingo yezintambo, omagnethi, nezigaxa zonke zisebenza ndawonye ukudala umsindo omnandi womculo. Kodwa kwenzekani ngempela?
Ake sihlukanise:
- Intambo yensimbi eguquguqukayo, eyaziwa ngokuthi ikhoyili yezwi, ithakathwa uzibuthe onamandla ngaphakathi kwesipika.
- Ikhoyili yezwi kanye nomazibuthe zenza isipelingi ukuze kwakheke ukudlidliza okuthinta imvamisa, noma ukuphakama komsindo.
- Lawa maza omsindo abe esekhuliswa ngekhoni/ekuzungezile nasezindlebeni zakho.
- Usayizi wekhoni/ozungezile uthinta ivolumu yesipika. Uma i-cone iba nkulu, isikhulumi siba sikhulu kanye nevolumu ephezulu. Ikhoni encane, isikhulumi siba sincane futhi ivolumu ithule.
Ngakho-ke uma ufuna umlingo omncane empilweni yakho, ungabheki kude kunesipika esingenantambo se-Bluetooth!
Umlando we-Bluetooth: Ubani Owasungula?
I-Bluetooth ubuchwepheshe esibusebenzisa nsuku zonke, kodwa uyazi ukuthi ubani owayisungula? Ake sibheke umlando walobu buchwepheshe boguquko kanye nomuntu owenze lokhu.
Ukusungulwa kwe-Bluetooth
Ngo-1989, inkampani yezokuxhumana yaseSweden ebizwa ngokuthi i-Ericsson Mobile yanquma ukwenza ubuciko. Banikeze onjiniyela babo umsebenzi wokwenza ubuchwepheshe berediyo ye-short-link obukwazi ukudlulisa amasignali ukusuka kumakhompyutha abo kuya kuma-headphone abo angenantambo. Ngemva kokusebenza kanzima, onjiniyela baphumelela futhi umphumela waba ubuchwepheshe be-Bluetooth esibusebenzisa namuhla.
Livelaphi Igama?
Ungase uzibuze ukuthi igama elithi "Bluetooth" livelaphi. Yebo, empeleni kuyingxenye yenganekwane yaseScandinavia. Ngokwale ndaba, iNkosi yaseDenmark okuthiwa uHarald “Bluetooth” Gormsson yahlanganisa isixuku sezizwe zaseDenmark zaba isizwe esisodwa esivelele. Njengobuchwepheshe, uHarald “Bluetooth” Gormsson ukwazile “ukuhlanganisa” zonke lezi zizwe ndawonye.
Isebenza Kanjani I-Bluetooth?
Uma ufuna ukuqonda ukuthi isipikha se-Bluetooth siwukhiqiza kanjani umsindo, uzodinga ukujwayelana nozibuthe. Nasi isifinyezo esisheshayo:
- I-Bluetooth ithumela isignali ethathwa uzibuthe kusipika.
- Umazibuthe ube esevevezela, enze amaza omsindo.
- Lawa maza omsindo ahamba emoyeni futhi ezwa izindlebe zakho.
Ngakho-ke usunakho, isayensi ngemuva kwezipikha zeBluetooth! Ubani owayazi ukuthi kulula kangaka?
Ithini I-Buzz Mayelana Nezipikha Zomsindo Zenkundla Eseduze?
Okuyisisekelo
Ngakho-ke uzwile ngezipikha ze-Near Field Audio (NFA), kodwa zimayelana nani? Nokho, lezi zipikha ezingenantambo zisebenza ngenqubo ebizwa nge-electromagnetic induction. Ngokuyisisekelo, bane-transducer, okuyindlela ewubukhazikhazi yokusho umshini oguqula amandla abe isignali kagesi. Bese, uma ubeka ifoni yakho phezu kwale siginali, ikhulisa umsindo ovela kudivayisi yakho.
I-Bluetooth vs. Near Field Audio
Ake siqhathanise futhi siqhathanise izikhulumi ze-Bluetooth ne-NFA:
- Zombili azinazintambo ngokuphelele, kodwa izikhulumi ze-NFA zisebenzisa amabhethri avamile ukukhiqiza amandla azo esikhundleni samasignali omsakazo.
- Ngezipikha ze-Bluetooth, kufanele ubhanqe ifoni yakho nesipikha ukuze uzwe umsindo. Ngezipikha ze-NFA, okumele ukwenze ukubeka ifoni yakho phezulu futhi usulungele ukuhamba!
fun Iqiniso
Ubuwazi ukuthi zonke izikhulumi zisebenza ngenxa yefiziksi? Ngo-1831, usosayensi oyiNgisi okuthiwa uMichael Faraday wathola uMthetho kaFaraday Wokungeniswa. Lo mthetho uthi uma uzibuthe uhlangana nomjikelezo kagesi, ukhiqiza amandla e-electromotive, okuthi kulokhu, okungamaza omsindo. Kupholile, akunjalo?
Yini Okufanele Uyicabangele Lapho Uthengela Izipikha Ezingenantambo?
Ukuhambelana
Uma kuziwa kuzipikha ezingenantambo, kubalulekile ukwenza isiqiniseko sokuthi uthola eyodwa ehambisana nedivayisi yakho. Hlola ibhokisi noma ukupakisha ukuze uqiniseke ukuthi kuzosebenza nefoni noma ikhompuyutha ephathekayo.
isabelomali
Ngaphambi kokuba uqale ukuthenga, kubalulekile ukuthola ukuthi uzimisele ukusebenzisa malini. Namathela kumabhrendi athembekile afana ne-Sony, i-Bose, noma i-LG ukuze uqiniseke ukuthi uthola imali eningi kakhulu yemali yakho.
Ikhwalithi Yomsindo
Uma kukhulunywa ngezipikha ezingenantambo, ikhwalithi yomsindo ibalulekile. Qiniseka ukuthi uthola enomsindo ocacile, opholile ozogcwalisa igumbi. Khumbula nje, uma uhlala efulethini, awudingi isikhulumi esizokwenza izindonga zinyakaze.
ukuthwala
Ubuhle bezipikha ezingenazintambo ukuthi ungakwazi ukuhamba nazo noma yikuphi lapho uya khona. Bheka isipikha esingasindi, esiqinile esikwazi ukumelana namanzi ukuze usiyise olwandle, epaki, noma ngisho nendawo yokosa inyama engemuva kwendlu.
isitayela
Ufuna isipikha sakho esingenantambo silingane nomhlobiso wakho wasekhaya. Khetha eyodwa engeke ithathe isikhala esiningi futhi engeke ibe indawo okugxilwe kuyo yegumbi.
Izinhlobo zezipikha
Uma kukhulunywa ngezipikha ezingenantambo, kunezinhlobo ezimbili eziyinhloko: i-Bluetooth ne-Near Field Audio. Izipikha ze-Bluetooth zinhle ezindaweni ezinkulu, kuyilapho izipikha ze-NFA zingcono ezindaweni ezincane.
Izipikha ezenziwe ngokwezifiso
Uma ufuna isipikha esingenantambo esigqamayo, kunezinketho eziningi ongazikhetha. Zama isipikha esincane sedeski, isipikha se-hockey puck, noma esisodwa esikhanyayo!
Ubuhle Nebubi Bezipikha Ezingenantambo
Izinzuzo
Izipikha ezingenantambo ziyindlela okufanele uhambe ngayo uma ufuna ukusetha okungenazinkinga:
- Akusekho ukukhubeka ezintanjeni noma ukuzama ukuzifihla!
- Ilungele izindawo ezingaphandle njengamadekhi, ama-patio, namachibi.
- Asikho isidingo sokukhathazeka ngezintambo zikagesi - izipikha ezisebenza ngebhethri ziyatholakala.
Izithiyo
Ngeshwa, izipikha ezingenazintambo azifiki ngaphandle kwezihibe zazo:
- Ukuphazamiseka kwamanye amaza omsakazo kungabangela amasignali angasebenzi kahle.
- Izimpawu ezehlisiwe zingaholela ekulaleleni okungekuhle.
- Izinkinga zomkhawulokudonsa zingaholela emculweni ongagcwele noma ocebile.
Umehluko
I-Wireless Audio Vs Enezintambo
Okulalelwayo okungenantambo kuyindlela yekusasa, enikeza ukunethezeka nenkululeko yokunyakaza. Ngama-headphone angenantambo, asikho isidingo sokukhathazeka ngezintambo eziphithene noma kufanele uhlale useduze nedivayisi yakho. Ungakwazi ukuhambahamba ngokukhululekile ngenkathi ulalele izingoma zakho ozithandayo, ama-podcasts, noma ama-audiobook. Ngakolunye uhlangothi, ama-headphone anentambo asanikeza ikhwalithi yomsindo ephakeme kakhulu, njengoba isignali ingacindezelwa njengoba injalo ngomsindo ongenantambo. Futhi, ama-headphone anentambo avame ukuthengeka kakhulu kunozakwabo abangenantambo. Ngakho-ke, uma ufuna umuzwa omuhle womsindo ngaphandle kokuphula ibhange, ama-headphone anentambo angase abe indlela yokuhamba. Nokho, uma ufuna ukuzizwisa okulula kakhulu kokulalela, okulalelwayo okungenantambo kuyindlela okufanele uhambe ngayo.
Isiphetho
Manje njengoba usuwazi ukuthi umsindo okungenantambo uyini, ungawusebenzisela ukulalela umculo, ama-podcasts, nama-audiobook nomaphi lapho ufuna. Ilungele ukuzivocavoca, ukuya emsebenzini, kanye nokuzijabulisa nje.
Ungayisebenzisela ukulalela umculo, ama-podcasts, nama-audiobook nomaphi lapho ufuna. Ilungele ukuzivocavoca, ukuya emsebenzini, kanye nokuzijabulisa nje.
NginguJoost Nusselder, umsunguli we-Neaera kanye nomkhangisi wokuqukethwe, ubaba, futhi ngiyathanda ukuzama izinto ezintsha ngesiginci enhliziyweni yesifiso sami, futhi kanye nethimba lami, bengilokhu ngidala izindatshana zebhulogi ezijulile kusukela ngo-2020. ukusiza abafundi abathembekile ngokurekhoda namathiphu esiginci.
