Kev piav qhia ntawm aptX Bluetooth codec thiab aptX vs SBC
Lub suab nrov Bluetooth enabled suab tau siv ntau hom codecs uas ua rau ntau yam kev sib txuas thiab lub suab sib txawv. Ib tug codec los ntawm Qualcomm uas yog tshaj tawm tias muaj qhov "zoo dua-tshaj-CD" zoo, hu ua aptX.
Lub hom phiaj rau aptX (yav tas los sau ntawv apt-X ) yog los muab cov cuab yeej siv suab rau lub suab zoo tshaj qhov ua lwm yam codecs tau muab. Cov cuab yeej siv uas siv cov aptX muaj xws li headphones, smartphones, ntsiav tshuaj, tsheb sib tsoo, los yog lwm hom Bluetooth tham.
Lub sij hawm aptX hais txog tsis tsuas yog cov thawj cov tshuab, tiam sis kuj muaj suite ntawm lwm yam kev hloov xws li Enhanced aptX , apt Live , aptX qis Latency , thiab apt HD - txhua qhov tseem ceeb hauv ntau scenarios hauv lub suab realm.
Ua li cas aptX Compares rau SBC
Yog lub neej ua ntej, txhua tus Bluetooth li kev txhawb nqa tus txheej txheem tsis tshua muaj qhov tsis muaj qhov nyuaj (sub-band coding (SBC) codec. Txawm li cas los xij, lwm codecs xws li aptX tuaj yeem siv nrog SBC, uas tsuas yog los ua kom muaj suab nrov zoo.
SBC txhawb kev sampling frequencies mus txog rau 48 kHz thiab me ntsis nqi txog 198 kb / s rau mono ntws thiab 345 kb / s rau lub tso suab ntws. Rau kev sib piv, aptX HD hloov suab txog li 576 kb / s rau 24-ntsis 48 kHz cov ntaub ntawv, uas tso cai rau cov suab ntaub ntawv zoo dua qub kom tau txav ceev dua.
Lwm qhov txawv yog cov txheej txheem siv nrog ob lub codecs. aptX siv li cas lub npe hu ua txawv txaij plawv-code tes taws los piav (ADPCM). "Adaptive differential" yog hais txog qhov yuav ua li cas thiab lub suab ntawm lub cev. Dab tsi tshwm sim yog qhov teeb meem tom ntej yog kwv yees raws li lub teeb liab ua ntej, thiab qhov txawv ntawm ob yog cov ntaub ntawv nkaus xwb uas tau tsiv lawm.
ADPCM tseem faib cov suab mus rau hauv plaub cais ntau zaus uas kawg muab txhua tus nrog lawv tus kheej lub suab sib-suab-nrov (S / N), uas yog txhais los ntawm cov teeb meem kev xav mus rau theem ntawm cov suab nrov tom qab. aptX tau pom tias muaj tus zoo dua S / N thaum kev soj ntsuam nrog ntau lub suab, uas feem ntau ntog hauv qab 5 kHz.
Nrog aptX Qis Latency, koj tuaj yeem xav kom tsawg dua 40 ms ntawm latency, uas yog zoo dua li SBC's 100-150 ms. Qhov no txhais tau li cas yog tias koj tuaj yeem tso cov suab uas coincides nrog cov yeeb yaj duab, thiab cia siab tias lub suab kom phim nrog cov yees duab tsis muaj sijhawm qeeb raws li lub tshuab siv SBC. Muaj lub suab uas nyob qis qis nrog cov yees duab tseem ceeb hauv cov cheeb tsam xws li video streaming thiab nyob gaming.
Lwm aptX compression algorithms hais saum toj no muaj lawv tus kheej siv, ib yam nkaus thiab. Piv txwv li, aptX Live yog ua rau cov kev txwv qis tsis txaus siv thaum siv cov wireless microphones. Enhanced aptX yog tsim dua rau kev siv cov ntaub ntawv thiab txhawb nqa txog li 1.28 Mb / s ntsis tus nqi rau 16-ntsis 48 kHz cov ntaub ntawv.
Dab tsi tag nrho cov no ua rau thaum siv cov aptX li yog tias koj yuav tsum tau muaj lub suab thiab lub suab nrov nrog qib siab txog kev nthuav dav, thiab mloog cov ntaub ntawv zoo nrog tsawg hiccups thiab qeeb.
aptX li
Thawj qhov kawg aptX ntaus ntawv yog tus Samsung Galaxy Tab 7.0 Plus, tab sis Qualcomm aptX tshuab tam sim no siv hauv tsheej lab ntawm cov neeg siv khoom hluav taws xob los ntawm ntau pua hom.
Koj muaj peev xwm nrhiav tau aptX nyob rau hauv soundbars, ntsiav tshuaj, tham, thiab headphones manufactured los ntawm cov tuam txhab xws li Vizio, Panasonic, Samsung, thiab Sony.
Koj tuaj yeem nrhiav tau qee yam ntawm cov cuab yeej ntawm Qualcomm lub aptX Products website. Los ntawm muaj, koj yuav lim cov qhabnias los qhia aptX, aptX HD, thiab aptX Qis Latency li.
Tus Codec Isn & T Tsis Txhob Muaj Tag Nrho Tej Yam
Nco ntsoov txog qhov tseeb tias aptX yog ib lub codec xwb thiab tsis txhais tau hais tias lub ntsej muag, tham, thiab lwm yam., Yuav ua tau zoo vim hais tias tsis siv SBC codec. Lub tswv yim yog tias Bluetooth technology nws tus kheej yog dab tsi pab rau cov kev pab cuam.
Ua lwm yam lus, txawm tias thaum siv aptX ntaus ntawv, yuav tsis muaj kev txhim kho loj heev thaum mloog cov ntaub ntawv tsis tshua zoo los sis siv cov lus tso tawm; tus codec tsuas ua tau ntau ntau rau lub suab zoo, thiab so yog sab laug mus rau qhov tseeb cov ntaub ntawv, zaus cuam, ntaus usability, thiab lwm yam.
Nws tseem ceeb heev uas yuav tsum paub tias ob qho tib si xa thiab tau txais cov cuab yeej Bluetooth yuav tsum tau txhawb aptX rau cov kev pab cuam kom pom, lwm qhov tsawg dua codec (SBC) yog siv los ntawm kev ua neej kom ob leeg tseem ua haujlwm.
Ib qho piv txwv yooj yim tuaj yeem pom yog tias koj siv koj lub xov tooj thiab qee tus neeg sab nraud Bluetooth tham. Hais tias koj lub xov tooj siv aptX tab sis koj cov neeg tham tsis ua, los yog tej zaum koj lub xov tooj tsis yog koj cov neeg tham. Ua li cas, nws 's tib yam li tsis muaj aptX txhua.