Ƙarin bayani na na'urar Bluetoothc aptX da aptX vs SBC
Dabbobin na'urorin Bluetooth masu amfani daban-daban zasu iya amfani da codecs daban-daban waɗanda suka haifar da haɗin kai da kuma bambancin bidiyo. Ɗaya daga cikin codec daga Qualcomm wanda aka tallata kamar yadda yake da kyakkyawan "mafi kyawun-CD", an kira shi aptX.
Manufar aptX (wanda aka rubuta a baya -X ) shine don samar da kayan aiki na kayan aiki don ingantaccen darajar sauti fiye da abin da wasu lambobi zasu iya bayar. Kayan aiki waɗanda zasu iya amfani da aptX sun hada da kunne, wayoyin hannu, Allunan, motar motar, ko wasu masu magana da Bluetooth.
Kalmar aptX tana nufin ba kawai fasaha na asali ba amma har da wani ɗakunan wasu bambancin kamar Ƙaƙƙwashin AptX , Aptx Live , AptX Low Latency , da kuma Aptx HD - duk da amfani a cikin daban-daban al'amura a cikin ƙasa mai ji.
Ta yaya aka kwatanta AptX zuwa SBC
Ta hanyar tsoho, duk na'urori na Bluetooth sun goyi bayan codec ƙaddamarwa mai ƙananan ƙananan sauƙaƙe (SBC). Duk da haka, ana iya amfani da wasu codecs kamar aptX tare da SBC, wanda aka gina kawai don samar da ingancin sauti mai kyau.
SBC tana tallafawa ƙananan samfurori har zuwa 48 kHz da kuma bit rates har zuwa 198 kb / s na raguna guda daya da 345 kb / s don raguna streo. Don kwatantawa, aptX HD yana canja wurin sauti har zuwa 576 kb / s don fayil 24-bit 48 kHz, wanda ya ba da damar yin amfani da bayanan sauti mai kyau don a motsa sauri.
Wani bambanci shine hanyar matsawa da ake amfani dasu tare da waɗannan codecs biyu. aptX yana amfani da abin da ake kira adawa ta hanyar rikici daban-daban (ADPCM). "Bambancin gyarawa" yana nufin yadda za a aika da samfurin samfurin. Abin da ya faru shi ne cewa sigina na gaba yana annabta bisa ga sigina na farko, kuma bambancin tsakanin su biyu shine kawai bayanin da aka motsa.
ADPCM kuma raba ragowar a cikin tashoshin mitar hudu da ke samar da kowane nau'i na siginar sigina (S / N), wanda aka bayyana ta siginar da ake tsammani zuwa matakin jin murya. An nuna aptX don samun S / N mafi kyau lokacin da ake rubutu da mafi yawan abun ciki na audio, wanda yawanci yakan fada a kasa 5 kHz.
Tare da AptX Low Latency, zaka iya sa ran kasa da 40 ms na latency, wanda ya fi kyau fiye da SBC ta 100-150 ms. Abin da ake nufi shine za ku iya sauraron abin da ya dace da bidiyon, kuma ku yi tsammanin sauti ya dace da bidiyon ba tare da jinkiri ba kamar na'urar da ke amfani da SBC. Samun audio da ke kasancewa tare da bidiyon yana da mahimmanci a yankunan kamar bidiyo da kuma wasan kwaikwayo na rayuwa.
Sauran algorithms na compression da aka ambata a sama suna da amfani da kansu, ma. Alal misali, anptX Live an gina shi ne don yanayin ƙananan bandwidth lokacin da ake amfani da wayoyin waya mara waya. An ƙaddara aptX haɓaka don ƙarin aikace-aikacen sana'a kuma yana goyon bayan har zuwa 1.28 Mb / s bit rate ga bayanai 16-bit 48 kHz.
Abin da duk wannan ya sauka a lokacin amfani da na'urorin aptX shi ne cewa ya kamata ka iya samun sauti mai dadi da ƙwanƙwasawa tare da babban matakin jin dadi, kuma sauraron kayan ingancin abu mai mahimmanci tare da rashin hiccups da jinkiri.
aptX na'urorin
Mafi mahimman kayan na'urorin AptX shine Samsung Galaxy Tab 7.0 Plus, amma ana amfani da fasahar AptX na Qualcomm a miliyoyin masu amfani da kayan lantarki daga daruruwan alamu.
Zaka iya samun aptX a cikin sauti, Allunan, masu magana, da kunnuwa kunne da kamfanoni kamar Vizio, Panasonic, Samsung, da Sony suka gina.
Zaka iya samun wasu daga cikin waɗannan na'urori a kan shafin yanar gizon AptX Products na Qualcomm. Daga can, za ka iya tace sakamakon da za a nuna aptX, aptX HD, da kuma aptX Low Latency na'urorin.
Cikin Codec Isn & N;
Yi la'akari da gaskiyar cewa aptX kawai codec ne kuma baya nufin cewa masu kunne, masu magana, da sauransu, za suyi kyau sosai saboda kawai ba a amfani da codec SBC ba. Manufar ita ce fasaha ta Bluetooth kanta ita ce abin da ke amfani da amfanin.
A wasu kalmomi, koda lokacin da aka yi amfani da na'urar aptX, ba za a sami cigaba mai girma ba lokacin da sauraron fayilolin mai ƙananan kyauta ko amfani da muryoyin kunne; codec kawai zai iya yin yawa don sauti mai jiwuwa, kuma sauran ya rage har zuwa bayanan sauti na ainihi, tsangwamawa ta atomatik, amfani da na'urar, da dai sauransu.
Yana da mahimmanci a san cewa duka aikawa da karɓar na'urar Bluetooth suna buƙatar tallafawa aptX don amfanin da za a gani, amma ana amfani da ƙananan codec (SBC) don haka duka na'urori zasu iya aiki.
Misali mai sauki za a iya gani idan kana amfani da wayarka da wasu masu magana na Bluetooth waje. Ka ce wayarka tana amfani da aptX amma masu magana basuyi, ko watakila wayarka ba kawai masu magana ba ce. Ko ta yaya, daidai ne da ba ta da aptX ba.