Kufotokozera kwa aptX Bluetooth codec ndi aptX vs SBC
Zipangizo zosiyana zothandizira za Bluetooth zingagwiritse ntchito ma codec osiyana omwe amachititsa mgwirizano wosiyanasiyana ndi kusiyana kwa khalidwe. Kodec imodzi yochokera ku Qualcomm yomwe imalengezedwa kukhala ndi "ubwino woposa CD," imatchedwa aptX.
Cholinga cha aptX (kalembedwe kopezeka X ) ndichopereka zipangizo zamamakono njira zowonjezera bwino kuposa zomwe ena angapereke. Zida zomwe zingagwiritse ntchito aptX zikuphatikiza m'manja, mafoni, mapiritsi, stereos zamagalimoto, kapena mitundu ina ya ma speaker Bluetooth.
Mawu akuti aptX sakunena za teknoloji yapachiyambi komanso mndandanda wa zosiyana zina monga Kupititsa patsogolo aptX , aptx Live , aptX Low Latency , ndi aptx HD - zonse zothandizira pa zosiyana zosiyanasiyana m'dera la audio.
Mmene AptX ikuyerekezera ndi SBC
Mwachinsinsi, madivaysi onse a Bluetooth ayenera kuthandizira pa codec yochepa-yowerengeka ya coding (SBC). Komabe, ma codec ena monga aptX angagwiritsidwe ntchito pamodzi ndi SBC, yomwe idangidwira kuti ikhale ndi zomveka bwino.
SBC imathandizira zitsanzo zamakono mpaka 48 kHz ndi pang "ono mpaka 198 kb / s kwa mono streams ndi 345 kb / s pamitsinje ya stereo. Kuyerekezera, aptX HD imatumiza ma audio mpaka 576 kb / s pa fayilo 24-bit 48 kHz, yomwe imalola kuti deta yapamwamba yapamwamba imveke mofulumira.
Kusiyanasiyana kwina ndi njira yogwiritsiridwa ntchito pogwiritsa ntchito ma codecs awiriwa. aptX imagwiritsa ntchito zomwe zimatchedwa kusintha kosiyana siyana koyendetsa makalata (ADPCM). "Kusiyanitsa maganizo" kumatanthauzira momwe zimayendera komanso zomwe zimaperekedwa. Chimachitika ndi chakuti chizindikiro chotsatira chimatsimikiziridwa molingana ndi chizindikiro choyambirira, ndipo kusiyana pakati pa awiri ndi deta yokha yomwe yasuntha.
ADPCM imapatuliranso ma voliyumu m'magulu anayi osiyana siyana omwe amatha kupereka aliyense payekha ndi chiwerengero chawo chokhalira phokoso (S / N), chomwe chimatanthauzidwa ndi chizindikiro choyembekezeredwa pamtundu wa phokoso lakumbuyo. AptX yawonetsedwa kuti ili ndi S / N yabwino pochita zinthu zambiri zomvetsera, zomwe zimakhala pansi pa 5 kHz.
Ndi Kutsika kochepa kwabwino, mungathe kuyembekezera kupitirira 40 ms of latency, yomwe ili yabwino kwambiri kuposa SBC ya 100-150 ms. Izi zikutanthawuza kuti mutha kusaka nyimbo zomwe zimagwirizana ndi kanema, ndikuyembekezera kuti phokoso lifanane ndi kanema popanda kuchedwa ngati chipangizo chomwe chimagwiritsa ntchito SBC. Kukhala ndi audio yomwe imakhala ikugwirizana ndi kanema ndi yofunikira m'madera ngati kusakanikirana ndi kujambula.
Machitidwe ena aptX omwe tatchulidwa pamwambawa ali ndi ntchito zawo, naponso. Mwachitsanzo, aptX Live imapangidwira zochitika zochepa zapachikwerero pamene ma microphone opanda waya akugwiritsidwa ntchito. Kupititsa patsogolo aptX kwapangidwira kwambiri ntchito zothandizira ndikuthandizira mpaka kufika pa 1.28 Mb / s peresenti ya data ya 16-bit 48 kHz.
Zonsezi zikugwiritsidwa ntchito pogwiritsa ntchito zipangizo zam'manja kuti mukhale ndi mawu omveka bwino komanso omveka bwino, komanso mumvetsetse zinthu zamtengo wapatali ndi zocheperapo ndi kuchedwa.
AptX Devices
Chipangizo choyambirira cha aptX chinali Samsung's Galaxy Tab 7.0 Plus, koma makanema a Qualcomm aptX akugwiritsidwa ntchito mamiliyoni ambiri ogula zamagetsi kuchokera ku magulu mazana.
Mukhoza kupeza ma apt, ma tablet, okamba, ndi mafoni opangidwa ndi aptX opangidwa ndi makampani monga Vizio, Panasonic, Samsung, ndi Sony.
Mungapeze zina mwa zipangizozi pawebhusayithi ya Qualcomm's aptX Products. Kuchokera kumeneko, mukhoza kufalitsa zotsatira kuti muwonetsere aptX, aptX HD, ndi zipangizo za AptX Low Latency.
Codec Isn & # 39; t Zonsezi Ndizofunika
Dziwani kuti aptX ndi codec ndipo sizitanthauza kuti matelofoni, okamba, ndi zina zotero, zidzachita bwino chifukwa chakuti codec SBC sichigwiritsidwa ntchito. Lingaliro ndilokuti teknoloji ya Bluetooth yokha ndiyo yomwe imapindulitsa.
Mwachilankhulo china, ngakhale pamene chipangizo cha aptX chigwiritsidwira ntchito, sipadzakhala kusintha kwakukulu mukamvetsera fayilo ya vola yapamwamba kapena kugwiritsa ntchito makutu osweka; codec ingathe kuchita zambiri pa khalidwe lakumvetsera, ndipo zina zonse zimasiyidwa pa deta yeniyeni, kusokonezeka kwafupipafupi, kugwiritsa ntchito chipangizo, ndi zina zotero.
N'kofunikanso kudziwa kuti kutumiza ndi kulandira chipangizo cha Bluetooth kumafunika kuthandizira aptX kuti phindu liwoneke, mwina codec yaing'ono (SBC) imagwiritsidwa ntchito mosalephera kuti zipangizo zonsezi zikhoze kugwira ntchito.
Chitsanzo chophweka chingawoneke ngati mukugwiritsa ntchito foni yanu ndi ena olankhula Bluetooth. Nenani foni yanu ikugwiritsa ntchito aptX koma okamba anu samatero, kapena mwinamwake foni yanu sikuti koma oyankhula anu amachita. Njira iliyonse, ndizofanana ndi kukhala opanda AptX nkomwe.