Wireless audio yog lub peev xwm los mloog suab paj nruag yam tsis muaj xov hlau ntawm koj cov neeg hais lus thiab koj lub tso suab. Nws yog ib lub tshuab uas siv xov tooj cua nthwv dej los xa cov suab teeb liab los ntawm qhov chaw mus rau cov neeg hais lus. Nws tseem hu ua wireless fidelity lossis Wi-Fi tham.
Hauv tsab xov xwm no, kuv yuav piav qhia nws ua haujlwm li cas thiab vim li cas nws thiaj li nrov dua.
Wireless Speakers: Lawv ua haujlwm li cas?
Txoj Kev Infrared
Cov neeg hais lus wireless tsis muaj kev sib txuas ncaj qha rau lub tso suab lossis lwm qhov chaw. Hloov chaw, lub kaw lus yuav tsum xa tawm lub teeb liab uas cov neeg hais lus tuaj yeem nqa thiab tig mus rau hauv hluav taws xob kom lub zog lub suab coil hauv tus neeg hais lus. Thiab muaj ib txoj hauv kev ua nws: infrared signals. Nws zoo li qhov chaw taws teeb tswj ua haujlwm li cas. Lub stereo system xa tawm ib lub teeb ntawm lub teeb infrared, uas tsis pom qhov muag liab qab. Cov nqaj no nqa cov ntaub ntawv nyob rau hauv daim ntawv ntawm pulses, thiab cov neeg hais lus wireless muaj cov sensors uas tuaj yeem ntes cov kis no.
Thaum lub sensor pom lub teeb liab, nws xa hluav taws xob teeb liab mus rau lub amplifier. Qhov no amplifier ua rau kom lub zog ntawm lub sensor tso zis, uas yog tsim nyog los tsav lub suab coil nyob rau hauv tus hais lus. Tom qab ntawd, alternating tam sim no ua rau lub suab coil lub electromagnet hloov polarity sai heev. Qhov no, nyob rau hauv lem, ua rau tus hais lus lub diaphragm vibrate.
Cov Kev Paiv
Siv cov teeb liab infrared rau cov neeg hais lus wireless muaj qee qhov tsis zoo. Rau ib qho, cov kab hluav taws xob infrared xav tau ib txoj hauv kev meej ntawm lub tso suab mus rau tus neeg hais lus. Txhua yam thaiv txoj kev yuav tiv thaiv lub teeb liab los ntawm kev ncav cuag tus neeg hais lus thiab nws yuav tsis ua suab nrov. Ntxiv rau, infrared signals yog zoo nkauj heev. Tej yam xws li cov chaw taws teeb tswj, teeb, thiab txawm tias tib neeg tso tawm hluav taws xob infrared, uas tuaj yeem ua rau muaj kev cuam tshuam thiab ua rau nws nyuaj rau tus neeg hais lus kom paub meej lub teeb liab.
Xov tooj cua Signals
Muaj lwm txoj hauv kev xa cov teeb liab wirelessly: xov tooj cua. Cov xov tooj cua tsis xav tau kab pom, yog li koj tsis tas yuav txhawj xeeb txog dab tsi thaiv txoj kev. Ntxiv rau, xov tooj cua cov cim tsis tshua muaj cuam tshuam nrog, yog li koj tuaj yeem txaus siab rau koj lub suab paj nruag yam tsis muaj kev sib tsoo lossis tsis sib xws.
Phau Ntawv Qhia Beginner rau Carrier Waves thiab Modulating Signals
Carrier Waves yog dab tsi?
Carrier nthwv dej yog electromagnetic nthwv dej uas tau hloov kho nrog cov ntaub ntawv-cov kabmob teeb liab rau kev xa xov wireless. Qhov no txhais tau hais tias lawv nqa lub zog los ntawm ib qho chaw mus rau lwm qhov, xws li cua sov thiab lub teeb los ntawm lub hnub mus rau lub ntiaj teb, lossis lub suab teeb liab los ntawm lub tshuab xa mus rau lub mloog pob ntseg. Carrier nthwv dej sib txawv ntawm lub suab nthwv dej, uas yog cov tshuab tsis muaj zog, vim tias lawv tuaj yeem taug kev los ntawm lub tshuab nqus tsev thiab tsis cuam tshuam ncaj qha nrog cov molecules ntawm qhov nruab nrab.
Modulating Signals yog dab tsi?
Modulating signals yog siv los hloov kho lub teeb liab cov cab kuj, thiab yog qhov tseem ceeb ntawm lub suab teeb liab npaj rau lub mloog pob ntseg tsav tsheb. Muaj ntau txoj hauv kev uas lub teeb liab modulating tuaj yeem hloov kho cov cab kuj yoj, xws li zaus Modulation (FM). FM ua haujlwm los ntawm kev muaj lub teeb liab modulate modulate zaus ntawm cov cab kuj yoj.
Wireless Analog Audio Transmission
Wireless headphones feem ntau ua haujlwm ze 2.4 GHz (xov tooj cua zaus), uas muaj qhov zoo tshaj plaws wireless ntau txog 91 m (300 ft). Txhawm rau ua kom qhov sib txawv ntawm cov neeg nqa khoom yoj zaus qis thiab ua kom tiav, lub teeb liab lub suab tsuas yog nthuav tawm thaum lub mloog pob ntseg txais tau demodulates nws. Lub suab tso suab yog xa los ntawm multiplexing thiab demultiplexing ua ntej thiab tom qab cov txheej txheem kev hloov pauv zaus.
Wireless Digital Audio Transmission
Suab audio yog tsim los ntawm instantaneous snapshots ntawm lub amplitude ntawm lub suab teeb liab thiab yog sawv cev digitally. Qhov zoo ntawm cov suab digital tuaj yeem txhais tau los ntawm nws cov qauv piv txwv thiab qhov tob me ntsis. Tus nqi piv txwv yog hais txog pes tsawg tus neeg lub suab amplitudes raug kuaj txhua thib ob, thiab qhov tob me ntsis hais txog pes tsawg cov khoom siv los sawv cev rau qhov amplitude ntawm ib qho qauv muab.
xaus
Yog li, txhawm rau suav nws, cov khoom siv tsis muaj hluav taws xob yog cov khoom siv hluav taws xob uas nqa lub zog ntawm ib qho mus rau lwm qhov, thiab cov teeb liab modulating yog siv los hloov cov teeb liab cab kuj, uas yog tom qab ntawd xa mus rau lub mloog pob ntseg. Wireless analog audio transmission yog ua tiav los ntawm kev hloov pauv zaus, thiab wireless digital audio kis tau los ntawm cov suab digital.
Nkag siab txog Ntiaj Teb Kev Tshaj Tawm Tshaj Tawm
Lub hauv paus ntawm Xov tooj cua Waves
Xov tooj cua tsis yog ib feem ntawm electromagnetic spectrum, nrog rau lub teeb thiab infrared. Lub teeb pom kev muaj qhov ntev ntawm 390 txog 750 nanometers, thaum lub teeb infrared muaj qhov ntev ntawm 0.74 micrometers mus rau 300 micrometers. Cov xov tooj cua tsis muaj zog, txawm li cas los xij, yog qhov loj tshaj plaws ntawm pawg, nrog lub wavelength ntawm 1 millimeter mus rau 100 km!
Cov xov tooj cua tsis muaj ob peb qhov zoo dua lwm hom hluav taws xob hluav taws xob, tab sis lawv xav tau ob peb yam kom tau txais los ntawm lub tso suab mus rau tus hais lus. Lub transmitter txuas nrog lub tso suab hloov pauv hluav taws xob teeb liab mus rau hauv xov tooj cua tsis muaj zog, uas tau tshaj tawm los ntawm tus kav hlau txais xov. Ntawm qhov tod tes, lub kav hlau txais xov thiab lub receiver ntawm tus hais lus wireless ntes lub xov tooj cua teeb liab, hloov mus rau hauv hluav taws xob teeb liab. Lub amplifier ces boosts lub hwj chim ntawm lub teeb liab tsav tus hais lus.
Xov tooj cua Frequencies thiab cuam tshuam
Xov tooj cua zaus yog ib qho tseem ceeb vim hais tias kev xa xov tooj cua siv cov zaus sib xws tuaj yeem cuam tshuam rau ib leeg. Qhov no tuaj yeem yog qhov teeb meem loj, yog li ntau lub tebchaws tau tsim cov cai txwv cov hom xov tooj cua ntau yam khoom siv tau tso cai los tsim. Hauv Tebchaws Meskas, cov bands ntawm zaus faib rau cov khoom siv xws li wireless hais lus suav nrog:
- 902 rau 908 megahertz
- 2.4 txog 2.483 gigahertz
- 5.725 txog 5.875 gigahertz
Cov zaus no yuav tsum tsis txhob cuam tshuam nrog xov tooj cua, TV, lossis kev sib txuas lus.
Bluetooth raws tu qauv
Bluetooth yog ib qho kev cai uas tso cai rau cov khoom siv txuas mus rau ib leeg. Qhov no txhais tau hais tias cov neeg hais lus wireless tuaj yeem muaj kev tswj hwm dhau qhov ntim thiab lub zog. Nrog rau kev sib txuas lus ob txoj kev, koj tuaj yeem tswj tau txoj kev taug kev twg lossis qhov chaw nres tsheb xov tooj cua uas koj lub kaw lus tau hloov mus rau hauv yam tsis tas yuav sawv thiab hloov nws ntawm lub ntsiab system. Qhov ntawd txias npaum li cas?
Dab tsi yog Magic Behind Wireless Bluetooth Speakers?
Science of Suab
Wireless Bluetooth hais lus yog zoo li ib tug tej yam yees siv potion ntawm xov hlau, hlau nplaum, thiab cones tag nrho cov ua hauj lwm ua ke los tsim lub suab qab zib suab paj nruag. Tab sis dab tsi tshwm sim tiag tiag?
Cia peb muab nws tsoo pov tseg:
- Ib qho yooj yim hlau hlau, hu ua lub suab coil, yog attracted rau ib tug muaj zog hlau nplaum nyob rau hauv tus hais lus.
- Lub suab coil thiab cov hlau nplaum ua haujlwm ua ke los tsim kev vibrations uas cuam tshuam rau qhov zaus, lossis suab, ntawm lub suab.
- Cov suab nthwv dej no tau nthuav dav los ntawm lub khob hliav qab / puag ncig thiab rau hauv koj lub pob ntseg.
- Qhov loj ntawm lub khob hliav qab / ib puag ncig cuam tshuam rau lub ntim ntawm tus neeg hais lus. Lub khob loj dua, tus hais lus loj dua thiab lub suab nrov dua. Lub khob me me, tus hais lus me me thiab lub suab nrov dua.
Nkauj Qhuas Vajtswv
Wireless Bluetooth hais lus yog zoo li ib tug tej yam yees siv potion ntawm xov hlau, hlau nplaum, thiab cones tag nrho cov ua hauj lwm ua ke los tsim lub suab qab zib suab paj nruag. Tab sis dab tsi tshwm sim tiag tiag?
Cia peb muab nws tsoo pov tseg:
- Ib qho yooj yim hlau hlau, hu ua lub suab coil, yog bewitched los ntawm ib tug haib hlau nplaum nyob rau hauv tus hais lus.
- Lub suab coil thiab cov hlau nplaum nrum lub suab los tsim kev vibrations uas cuam tshuam rau qhov zaus, lossis suab, ntawm lub suab.
- Cov suab nthwv dej no tau nthuav dav los ntawm lub khob hliav qab / puag ncig thiab rau hauv koj lub pob ntseg.
- Qhov loj ntawm lub khob hliav qab / ib puag ncig cuam tshuam rau lub ntim ntawm tus neeg hais lus. Lub khob loj dua, tus hais lus loj dua thiab lub suab nrov dua. Lub khob me me, tus hais lus me me thiab lub suab nrov dua.
Yog li yog tias koj tab tom nrhiav me ntsis khawv koob hauv koj lub neej, saib tsis muaj ntxiv dua li lub wireless Bluetooth hais lus!
Keeb Kwm ntawm Bluetooth: Leej Twg Tsim Nws?
Bluetooth yog ib lub tshuab uas peb siv txhua hnub, tab sis koj puas paub leej twg tsim nws? Cia peb saib cov keeb kwm ntawm qhov kev hloov kho thev naus laus zis no thiab tus neeg tom qab nws.
Lub Invention ntawm Bluetooth
Xyoo 1989, lub tuam txhab kev sib txuas lus Swedish hu ua Ericsson Mobile txiav txim siab kom muaj tswv yim. Lawv tau ua haujlwm rau lawv cov engineers nrog tsim cov xov tooj cua luv luv uas tuaj yeem xa cov teeb liab los ntawm lawv tus kheej lub khoos phis tawj mus rau lawv lub wireless headsets. Tom qab ua haujlwm hnyav heev, cov engineers tau ua tiav thiab qhov tshwm sim yog Bluetooth technology peb siv niaj hnub no.
Lub Npe Los Ntawm Qhov Twg?
Tej zaum koj yuav xav paub qhov twg lub npe "Bluetooth" tuaj ntawm. Zoo, nws yog ib feem ntawm Scandinavian lus dab neeg. Raws li zaj dab neeg, ib tug Danish huab tais hu ua Harald "Bluetooth" Gormsson koom ib pab pawg neeg Danish rau hauv ib pawg neeg super. Ib yam li cov thev naus laus zis, Harald "Bluetooth" Gormsson tuaj yeem "sib koom" tag nrho cov pab pawg no ua ke.
Bluetooth ua haujlwm li cas?
Yog tias koj xav nkag siab tias Bluetooth hais lus ua suab nrov li cas, koj yuav tsum paub txog cov hlau nplaum. Ntawm no yog ib tug ceev rundown:
- Bluetooth xa tawm lub teeb liab uas tau khaws los ntawm cov hlau nplaum hauv tus hais lus.
- Cov hlau nplaum ces vibrates, tsim suab nthwv dej.
- Cov suab nthwv dej no taug kev hauv huab cua thiab hnov los ntawm koj lub pob ntseg.
Yog li ntawd koj muaj nws, kev tshawb fawb tom qab Bluetooth hais lus! Leej twg paub tias nws yooj yim heev?
Dab tsi yog Buzz Hais Txog Zej Zog Cov Neeg Hais Lus?
tsim
Yog li koj tau hnov ntawm Near Field Audio (NFA) hais lus, tab sis lawv hais txog dab tsi? Zoo, cov neeg hais lus wireless no ua haujlwm los ntawm cov txheej txheem hu ua electromagnetic induction. Yeej, lawv muaj ib tug transducer, uas yog ib txoj kev zoo nkauj ntawm hais tias ib tug ntaus ntawv uas hloov lub zog mus rau hauv ib tug hluav taws xob teeb liab. Tom qab ntawd, thaum koj tso koj lub xov tooj rau saum lub teeb liab no, nws ua kom lub suab nrov ntawm koj lub cuab yeej.
Bluetooth vs. Near Field Audio
Cia peb sib piv thiab sib piv Bluetooth thiab NFA hais lus:
- Ob leeg yog wireless kiag li, tab sis NFA cov neeg hais lus siv cov roj teeb zoo ib yam los tsim lawv lub zog es tsis txhob siv xov tooj cua.
- Nrog Bluetooth hais lus, koj yuav tsum ua ke koj lub xov tooj mus rau tus hais lus kom hnov lub suab. Nrog NFA cov neeg hais lus, txhua yam koj yuav tsum ua yog teeb tsa koj lub xov tooj rau saum thiab koj mus zoo!
kev lom zem Fact
Koj puas paub tias txhua tus hais lus ua haujlwm ua tsaug rau physics? Xyoo 1831, tus kws tshawb fawb Askiv hu ua Michael Faraday tau tshawb pom Faraday Txoj Cai ntawm Induction. Txoj cai lij choj no hais tias thaum cov hlau nplaum cuam tshuam nrog hluav taws xob hluav taws xob, nws tsim cov hluav taws xob hluav taws xob, uas nyob rau hauv cov ntaub ntawv no, yog suab nthwv dej. Zoo nkauj heev, txoj cai?
Koj yuav tsum xav txog dab tsi thaum yuav khoom rau Wireless Speakers?
compatibility
Thaum nws los txog rau cov neeg hais lus wireless, nws yog ib qho tseem ceeb kom paub tseeb tias koj tau txais ib qho uas haum rau koj lub cuab yeej. Kos lub thawv lossis ntim kom paub tseeb tias nws yuav ua haujlwm nrog koj lub xov tooj lossis lub laptop.
Budget
Ua ntej koj pib yuav khoom, nws yog ib qho tseem ceeb kom paub seb koj puas kam siv nyiaj ntau npaum li cas. Ua raws li cov npe ntseeg siab xws li Sony, Bose, lossis LG kom paub tseeb tias koj tau txais txiaj ntsig zoo tshaj plaws rau koj cov nyiaj npib.
suab Zoo
Thaum nws los txog rau cov hais lus wireless, suab zoo yog qhov tseem ceeb. Nco ntsoov tias koj tau txais ib qho uas muaj lub suab meej, nkig uas yuav ua rau hauv chav. Tsuas yog nco ntsoov, yog tias koj nyob hauv ib chav tsev, koj tsis tas yuav muaj tus hais lus uas yuav ua rau cov phab ntsa co.
Kev ruaj ntseg
Qhov zoo nkauj ntawm cov neeg hais lus wireless yog tias koj tuaj yeem nqa lawv nrog koj txhua qhov chaw koj mus. Saib rau lub teeb yuag, tus hais lus ruaj khov uas tiv taus dej kom koj tuaj yeem nqa mus rau lub puam, chaw ua si, lossis txawm tias tom qab barbecue.
style
Koj xav kom koj lub wireless hais lus kom haum nrog koj lub tsev décor. Xaiv ib qho uas yuav tsis siv ntau qhov chaw thiab yuav tsis yog qhov chaw focal ntawm chav.
Hom Hais Lus
Thaum nws los txog rau cov neeg hais lus wireless, muaj ob hom tseem ceeb: Bluetooth thiab Near Field Audio. Bluetooth hais lus zoo rau qhov chaw loj dua, thaum NFA hais lus zoo dua rau thaj chaw me.
Customizable Speakers
Yog tias koj tab tom nrhiav rau tus hais lus wireless uas sawv tawm, muaj ntau txoj kev xaiv kho tau. Sim ib lub rooj hais lus me me, tus hais lus hockey puck, lossis txawm tias ib lub teeb ci!
Qhov Pros thiab Cons ntawm Wireless Speakers
Cov Kev Pab
Wireless speaker yog txoj hauv kev mus yog tias koj tab tom nrhiav kev teeb tsa tsis muaj teeb meem:
- Tsis muaj kev cuam tshuam ntxiv ntawm cov xov hlau lossis sim zais lawv!
- Zoo meej rau thaj chaw sab nraum zoov xws li decks, patios, thiab pas dej ua ke.
- Tsis tas yuav txhawj xeeb txog cov hlua hluav taws xob - cov hais lus siv roj teeb muaj.
Cov Kev Paiv
Hmoov tsis zoo, wireless hais lus tsis tuaj yam tsis muaj lawv qhov tsis zoo:
- Kev cuam tshuam los ntawm lwm yam xov tooj cua tuaj yeem ua rau muaj teeb meem tsis txaus ntseeg.
- Cov teeb liab poob tuaj yeem ua rau muaj kev mloog tsis zoo.
- Bandwidth teeb meem tuaj yeem ua rau muaj suab paj nruag tsawg dua lossis nplua nuj.
Txawv
Wireless Audio Vs Wired
Wireless audio yog txoj hauv kev rau yav tom ntej, muab kev yooj yim thiab kev ywj pheej ntawm kev txav mus los. Nrog lub mloog pob ntseg wireless, koj tsis tas yuav txhawj xeeb txog tangled cords lossis yuav tsum nyob ze ntawm koj lub cuab yeej. Koj tuaj yeem txav mus los ntawm kev ywj pheej thaum mloog koj cov nkauj nyiam, podcasts, lossis audiobooks. Ntawm qhov tod tes, wired headphones tseem muab lub suab zoo dua, vim tias lub teeb liab tsis compressed zoo li nws nrog lub suab wireless. Ntxiv rau, wired headphones feem ntau pheej yig dua li lawv cov wireless counterparts. Yog li, yog tias koj tab tom nrhiav rau lub suab zoo yam tsis tau tawg lub txhab nyiaj, lub mloog pob ntseg yuav yog txoj hauv kev mus. Txawm li cas los xij, yog tias koj tab tom nrhiav kev mloog yooj yim dua, lub suab wireless yog txoj hauv kev mus.
xaus
Tam sim no koj paub tias lub suab wireless yog dab tsi, koj tuaj yeem siv nws los mloog nkauj, podcasts, thiab audiobooks txhua qhov chaw koj xav tau. Nws zoo meej rau kev tawm dag zog, taug kev, thiab tsuas yog muaj kev lom zem.
Koj tuaj yeem siv nws los mloog suab paj nruag, podcasts, thiab audiobooks nyob qhov twg koj xav tau. Nws zoo meej rau kev tawm dag zog, taug kev, thiab tsuas yog muaj kev lom zem.
Kuv yog Joost Nusselder, tus tsim ntawm Neaera thiab tus neeg lag luam cov ntsiab lus, txiv, thiab nyiam sim cov cuab yeej tshiab nrog guitar ntawm lub siab ntawm kuv txoj kev mob siab rau, thiab ua ke nrog kuv pab neeg, Kuv tau tsim cov ntsiab lus ntawm blog txij li xyoo 2020. los pab cov neeg nyeem siab ncaj nrog cov ntaub ntawv kaw lus thiab cov lus qhia guitar.
