da Belun kunne na Bluetooth Ba su ne babban juyin juya hali na karni na mu ba, amma dole ne mu yarda cewa sun ɗan yi mana sauƙi. Kuma shine, kodayake belun kunne sun kasance ma'asumai a zahiri, ba daidai ba ne a yi amfani da mintuna da yawa ba tare da kunna kulli ba kafin samun damar sauraron waƙa. Tunanin 'Gaskiya Wireless' yana nan don tsayawa, amma har yanzu belun kunne mara waya yana da batutuwa da yawa da ke jira, kamar yadda lamarin yake. tawagar, da ingancin saukarwa ko rashin jituwa na codec.
Shin belun kunne sun fi Bluetooth kyau?
Yana iya zama kamar karya, amma komai ci gaban fasaha na fasaha, akwai mafita daga baya da ke ci gaba da zartas da ƙirƙira na yanzu. Akwai nau'o'i da jeri da yawa na belun kunne mara waya, amma a aikace, kusan babu waƙar kiɗan da kuke saurare da ɗayan waɗannan na'urori da za su wuce ingancin da muka riga muka samu tare da CD na tatsuniya.
An iyakance belun kunne da aka yi amfani da su don watsa motsin injina daga katin sauti na mai kunnawa zuwa kunnuwanmu. Zuwa ga cire kebul daga lissafin, abin da za ku yi tafiya daga wayar hannu zuwa na'urar kai shine igiyoyin lantarki. Daga baya, wannan bayanin dole ne a canza shi a cikin ƙaramin na'urar da kuka saka a cikin kunnen ku. Wannan shine aikin DAC. Amma abin bai tsaya nan ba. Zuwa don watsawa bayanai da yawa a ainihin lokacin ta amfani da Bluetooth, ya zama dole damfara bayanai. Don wannan, ana amfani da shahararrun mutane codec. Na ƙarshe suna da alhakin gaskiyar cewa za a iya samun tazara tsakanin abin da kuke kunnawa da abin da kuke sauraro, da kuma bayanin dalilin da yasa ake jin AirPods mafi kyau akan iPhone fiye da wayar Android.
latency shine batun
Kuna siyan sabbin belun kunne kuma gwada su da wayarka. Suna da kyau don sauraron Spotify ko wasu podcast. Amma wata rana, kun gano cewa jerin da kuke kallo akan Netflix ba su da mataki tare da sauti. Wannan matsalar tana faruwa ƙasa da ƙasa, yayin da fasahar ke ci gaba. Duk da haka, yana yiwuwa ya taɓa faruwa da ku kuma kuna son sanin ko akwai wata hanya warware wannan matsalar wanda ke da ban haushi sosai lokacin kallon fina-finai, silsila ko bidiyon YouTube.
Wannan tazarar da ka gane tsakanin leɓun mai magana da abin da ka ji shine sanannen latency. Irin wannan tazarar lokaci koyaushe yana wanzu, koda lokacin da muke amfani da igiyoyi. Ana auna latency a ciki millise seconds, kuma ba shi da cikakkiyar fahimta yayin motsi a ƙananan ƙima. Koyaya, lokacin da latency ya yi girma, ƙwarewar sauraron na iya lalacewa gaba ɗaya.
codecs
Kowane naúrar kai yana goyan bayan adadin codec. Haka yake ga kowace na'ura da za ku yi amfani da ita azaman tushen sauti. Akwai mafi kyawun codecs da mafi muni, amma abu mafi mahimmanci don sanin shi ne naúrar kai da na'urar sake kunnawa dole ne su goyi bayan codec iri ɗaya. Musamman idan muka yi magana game da kayan aiki masu mahimmanci. Sanin codecs yana da mahimmanci don samun damar samun mafi kyawun kowane samfur kuma ku guje wa jinkirin tsoro.
SBC
An kirkiro wannan ma'auni a cikin 1993, kuma shine ƙaramin codec wanda kowane na'urar mai jiwuwa ta Bluetooth dole ne ta goyi baya. Yana amfani da bayanin martabar sauti na A2DP. Ƙarƙashin wannan codec shine cewa za a iya inganta matsawa sosai. Ya kai matsakaicin adadin 328 kbps, kuma jinkirin sa shine diddigin Achilles.
AAC
Ya kasance ci gaban kamfanoni da yawa, waɗanda AT&T, Nokia da Sony suka yi fice, don suna kaɗan. ingancin sautinsa ya fi SBC kyau, amma latency ɗinsa ya fi muni. Ya zama sanannen godiya ga Apple da YouTube. Duk da kasancewarsa tsohon ma'auni, yana haɓaka tsawon shekaru, musamman a sashin watsawa ta waya.
A cikin wannan codec za mu iya hada da LD-AAC da bambance-bambancensa, wanda shine wanda Apple ke amfani dashi a cikin AirPods. A halin yanzu, yawancin matsalolinsa na asali an warware su ta hanyar juyin halitta, kuma ana iya cewa codec ne wanda zai iya fuskantar mafi ci gaba a fannin.
Sony LDAC
Wannan shi ne daya daga cikin manyan codecs wanda muke da shi a halin yanzu. Yana da bayanin dalilin da yasa belun kunne mara waya na wannan alamar sun shahara kamar yadda suke. Yana da bambance-bambancen guda uku:
- LDAC 330kbps
- LDAC 660kbps
- LDAC 990kbps
Qualcomm aptX
An fara haɓaka wannan codec a cikin 80s. A cikin 2015, Qualcomm ya karɓi shi don haɓaka shi. Sun samu uku bambance-bambancen karatu:
- Laananan laten: tare da bambancin aptX LL. Yana goyan bayan ƙimar kusan ms 30.
- Babban ma'ana: tare da bambancin aptX HD. An tsara wannan codec don sauraron kiɗa. Ana sadaukar da latency don ƙara matsakaicin bitrate, kasancewa ma'auni wanda ya zarce ingancin sauti na CD, yana iya motsawa zuwa 576 kbps a 24 bit da 192 kHz.
- codec mai daidaitawa: Yana ba ku damar canzawa tsakanin aptX LL da aptX HD dangane da abin da muke kunnawa, har ma da isa matsakaicin dabi'u.
LDHC (Hi-Res Wireless Audio)
HWA ce ta haɓaka wannan codec, kuma yana da bambance-bambancen guda biyu. Ƙungiya tana samun tallafi daga mahimman kamfanoni a fannin kamar Sennheiser, AudioTechnica, Pioneer ko Huawei. Codec yana da ikon isar da iyakar 900 kbps a 24 bit da 96 kHz tare da in mun gwada da low latency.
Bayanin LC3
Yana ba da damar bitrate tsakanin 160 kbps da 345 kbps tsakanin 8 da 48 kHz tare da ƙarancin latency. Yana da ci gaban Interestungiyar Musamman ta Musamman ta Bluetooth (Na gaba). An haɗa shi a cikin fasahar Bluetooth LE Audio.
Yadda ake gyara matsalolin latency akan belun kunne na Bluetooth
Wasu mafita waɗanda ke aiki don rage latency na belun kunne Su ne masu biyowa:
Sabunta codecs akan na'urori biyu
Yanzu da ka san mafi mahimmanci codecs a can, matsa gano wadanda suka dace da wayarka y tus auriculares.
Idan kana da tsohuwar wayar hannu da sabbin belun kunne, matsalar latency na iya kasancewa a can. Sabunta tsarin aiki da firmware na belun kunne. Makasudin wannan tsari shine a guji amfani da mafi yawan nau'ikan codec, wanda, kasancewa mafi tsufa, tabbas shine mafi munin aiki.
Sake haɗa na'urar
Wani lokaci, matsalar ba ta da yawa codec a matsayin takamaiman matsala. Ya kamata ku sake haɗa na'urar idan kuna tunanin akwai al'amuran haɗin gwiwa ko kuma idan kun lura kawai latency a cikin ɗayan belun kunne guda biyu.
Ka guji tsangwama
Kamar yadda muka sani, haɗin kai ta Bluetooth yana da laushi sosai. Da farko, matsakaicin nisa wanda yawanci yake aiki shine 10 mita. Duk wani cikas na iya haifar da rashin aiki.
Idan muna da wasu na'urori da aka haɗa kuma waɗanda kuma suke amfani da Bluetooth, za su iya tsoma baki tare da inganci. Wannan na iya haifar da tsangwama da ƙara jinkiri lokacin sauraron sauti.
Ba duk wayoyin hannu da belun kunne ke jituwa ba
Muna komawa batun codec. Duk wani masana'anta na lasifikan kai da ke son yin amfani da ɗayan waɗannan codecs masu ban sha'awa waɗanda muka yi magana game da su a cikin sashe na baya, dole ne su shiga cikin akwatin - idan masu mallakarsu sun sayar da lasisi, ba shakka. Mafi arha belun kunne kawai suna goyan bayan tsoffin codecs. Rage latency ba zai yiwu ba. Yanzu kun fahimci dalilin da yasa zaku iya siyan belun kunne mara waya don dakin motsa jiki akan Yuro goma, daidai?
Amma kuma muna iya samun matsalar na'urar sake kunnawa. Kuna iya samun belun kunne masu kyau da wayar hannu wanda masana'anta bai biya lasisin amfani da wannan codec ba. Sakamako? Naúrar kai zai yi aiki ta amfani da codec daban. Don wannan dalili, ana jin AirPods mafi kyau akan iPhones kuma ana jin belun kunne na Sony daidai akan duk wayoyin hannu waɗanda ke goyan bayan LDAC. Ta tsarin, abubuwa kuma sun bambanta. Android ba ta sarrafa codecs da kyau, kuma ana iya lura da rashin iyawarsa yayin amfani da ɗaya kamar yadda ake buƙatar lissafi kamar AAC.
Kafin siyan na'urar kai ta Bluetooth, nemo takamaiman takardar wayarka kuma yana bincika da kyau abin da codecs yake tallafawa. Sannan, sami belun kunne guda biyu waɗanda suka dace. In ba haka ba, na'urarka za ta yi aiki tare da codec wanda ba shi da kyau. Say mai za ku lura da shi duka a cikin inganci da latency.