Incazelo ye-aptX Bluetooth codec ne-aptX vs SBC
Amadivaysi alalelwayo alalelwayo anikwe amandla ahlukile angasebenzisa i- codec ehlukile eholela ekuxhumaneni okuhlukahlukene nokuhluka kwekhwalithi yomsindo. I-codec eyodwa evela ku-Qualcomm ekhangiswa njengekhwalithi "engcono kune-CD", ibizwa ngokuthi i-aptX.
Inhloso ye-aptX (ngaphambilini i -X- spelled apt-X ) ukuhlinzeka ngemishini yomsindo izindlela ezingcono zekhwalithi kunalokho okunye okungahlinzeka ngamakhodi. Amadivayisi angasebenzisa i-aptX afaka ama-headphone, ama-smartphones, amaphilisi, ama-stereos emoto, noma ezinye izinhlobo zezikhulumi ze-Bluetooth.
Igama elithi aptX lisho ubuchwepheshe bokuqala kuphela kodwa futhi nolunye uhlobo lwezinye izinhlobo ezifana ne- AptX ethuthukisiwe , i- aptx Live , i- AptX Low Latency , ne- aptx HD- konke ewusizo ezimweni ezihlukahlukene ngaphakathi kwendawo yomsindo.
Yeka ukuthi i-AptX ikufanisa kanjani ne-SBC
Ngokuzenzakalelayo, wonke amadivayisi we-Bluetooth kufanele asekele i-codec encane ye-sub-band coding encoding (SBC). Noma kunjalo, amanye ama-codec afana ne-aptX angasetshenziswa kanye ne-SBC, eyakhelwe kuphela ukuze inikeze ikhwalithi ezwakalayo ezwakalayo.
I-SBC isekela ama-sampling frequencies kuze kufike kuma-48 kHz kanye namanani amancane kuze kufike ku-198 kb / s for streams mono no-345 kb / s emifudlana ye-stereo. Ukuqhathanisa, i-aptX HD idlulisela umsindo kuze kube ku-576 kb / s yefayela le-24-bit 48 kHz, evumela ukuthi idatha yomsindo ephezulu ikhishwe ngokushesha.
Omunye umehluko yindlela yokucindezela esebenzisana nalezi codec ezimbili. i-aptX isebenzisa lokho okubizwa ngokuthi ukuguquguquka kokuhluka kwe-pulse-code modulation (ADPCM). "Ukuhlukana okuguquguqukayo" kubhekisela kanjani nokuthi isampula yomsindo isakazwa kanjani. Kwenzekani ukuthi isignali esilandelayo ibikezelwe ngokusekelwe isignali yangaphambili, futhi umehluko phakathi kokubili yiyona yedatha kuphela edluliswayo.
I-ADPCM ibuye ihlukanise umsindo phakathi kwamaqembu amane ahlukene wezimvamisa ekugcineni ehlinzeka ngamunye ngesilinganiso sakho somsindo-kuya-umsindo (S / N), esichazwa isignali elindelekile ezingeni lomsindo wangemuva. i-aptX iboniswe ukuthi ibe ne-S / N engcono uma isebenzelana nokuqukethwe komsindo okuningi, okuvame ukuwa ngaphansi kuka-5 kHz.
Nge-Lat Low Low Latency, ungalindela ngaphansi kuka-40 ms we-latency, okungcono kakhulu kune-SBC ka 100-150 ms. Lokho kusho ukuthi ungakwazi ukusakaza umsindo ohambisana nevidiyo, futhi ulindele ukuthi umsindo uhambelane nevidiyo ngaphandle kokulibazisa okuningi njengedivayisi esebenzisa i-SBC. Ukuba nomsindo ohlala ukuvumelanisa nevidiyo kubalulekile ezindaweni ezifana nokusakaza kwevidiyo nokudlala ngokudlala.
Amanye ama-algorithms acress algorithms okukhulunywe ngawo ngenhla asebenzisa wona, nawo. Isibonelo, i-AptX Live yakhiwe ngezimo ezisezingeni eliphansi lokuhamba komgwaqo lapho kusetshenziswe amakholi angenantambo. I-aptX eyithuthukisiwe iklanyelwe kakhulu izinhlelo zokusebenza zobuchwepheshe futhi isekela kufika ku-1.28 Mb / s bit rate s idatha ye-16-bit 48 kHz.
Konke lokhu kwehla uma usebenzisa amadivaysi aptX ukuthi kufanele ukwazi ukuzwa umsindo obushelelezi nohlosile ngezinga eliphakeme lemininingwane yomsindo, futhi ulalele izinto eziphezulu zekhwalithi ezinama-hiccups amancane nokulibazisa.
Amadivayisi aptX
Idivayisi yokuqala yomthombo we-aptX yi-Samsung Galaxy Tab 7.0 Plus, kodwa ubuchwepheshe be-Qualcomm aptX okwamanje busetshenziselwa izigidi zamakhompiyutha omthengi kusuka kumakhulu wemikhiqizo.
Ungathola i-AptX kuma-soundbars, amaphilisi, izikhulumi, nama-headphone akhiqizwa izinkampani ezifana ne-Vizio, i-Panasonic, i-Samsung, ne-Sony.
Ungathola amanye alawa madivayisi kwiwebhusayithi ye-Qualcomm's AptX Products. Kusuka lapho, ungakwazi ukuhlunga imiphumela ukubonisa i-AptX, aptX HD, namadivayisi aptX Low Latency.
I-Codec Isn & # 39; t Yonke Lezi Zindaba
Qaphela ukuthi i-AptX yikodod kuphela futhi ayisho ukuthi i-headphone, izikhulumi, njll, izokwenza kahle nje ngoba i-codec ye-SBC ayisetshenziswa. Umqondo wukuthi ubuchwepheshe beBluetooth ngokwayo yilokho okusiza izinzuzo.
Ngamanye amazwi, ngisho nalapho kusetshenziswe idivayisi ye-AptX, ngeke kube nokuthuthukiswa okukhulu uma ulalela ifayela eliphansi le-audio noma usebenzisa i-headphones ephukile; i-codec ingenza okuningi kakhulu ngekhwalithi yomsindo, futhi konke okushiyekile kushiywe kwedatha yangempela yomsindo, ukuphazanyiswa kwamaphutha, ukusetshenziswa komshini, njll.
Kubalulekile ukuqaphela ukuthi kokubili ukuthumela nokwamukela idivaysi ye-Bluetooth kudinga ukusekela i-AptX ngezinzuzo ezizobonakala, noma ngabe i-codec encane (i-SBC) isetshenziswe ngokuzenzakalelayo ukuze amadivayisi womabili asebenze.
Isibonelo esilula singabonakala uma usebenzisa ifoni yakho nezinye izikhulumi ze-Bluetooth zangaphandle. Tshela ifoni yakho isebenzisa i-aptX kodwa izikhulumi zakho azikho, noma mhlawumbe ifoni yakho ayikho kodwa izikhulumi zakho zenza. Kungakhathaliseki ukuthi yikuphi, kufana nokungafani neze.