Txhua Yam Koj Yuav Tsum Paub Txog LE Audio

LE Audio yog dab tsi?

LE Audio yog tus qauv siv tshuab suab tshiab tau qhia los ntawm Bluetooth Special Interest Group (SIG) hauv xyoo 2020. Nws yog raws li Bluetooth low-zog 5.2 thiab siv ISOC (isochronous) architecture. LE Audio qhia lub tswv yim tshiab LC3 suab codec algorithm, uas muaj qis dua latency thiab zoo dua kis tau tus mob. Nws kuj txhawb cov yam ntxwv xws li kev sib txuas ntawm ntau lub cuab yeej thiab kev sib koom ua suab, muab cov neeg siv khoom nrog lub suab zoo dua.

Qhov zoo ntawm LE Audio piv rau Classic Bluetooth

LC3 Codec

LC3, raws li qhov yuav tsum tau codec txhawb los ntawm LE Audio, yog sib npaug rau SBC hauv classic Bluetooth suab. Nws yog poised los ua lub ntsiab codec rau yav tom ntej Bluetooth suab. Piv rau SBC, LC3 muaj:

• Higher Compression Ratio (Lower Latency): LC3 muaj qhov compression ntau dua piv rau SBC hauv classic Bluetooth suab, uas ua rau qis latency. Rau cov ntaub ntawv tso suab ntawm 48K / 16bit, LC3 ua tiav qhov kev ntseeg siab compression piv ntawm 8: 1 (96kbps), thaum SBC feem ntau ua haujlwm ntawm 328kbps rau tib cov ntaub ntawv.
• Zoo suab zoo: Nyob rau tib lub bitrate, LC3 outperforms SBC hauv suab zoo, tshwj xeeb tshaj yog nyob rau hauv tuav ib nrab-rau-tsawg zaus.
• Kev them nyiaj yug rau ntau hom suab: LC3 txhawb nqa cov ntu ntu ntawm 10ms thiab 7.5ms, 16-ntsis, 24-ntsis, thiab 32-ntsis suab sampling, ib qho kev txwv tsis pub muaj xov tooj ntawm cov suab, thiab piv txwv zaus ntawm 8kHz, 16kHz, 24kHz, 32kHz, 44.1kHz, thiab

Multi-kwj suab

• Kev them nyiaj yug rau ntau yam ywj pheej, synchronized suab ntws: Multi-kem suab enables kis tau tus mob ntawm ntau yam ywj siab, synchronized suab kwj ntawm ib lub qhov chaw ntaus ntawv (xws li, smartphone) thiab ib tug los yog ntau tshaj cov khoom tau txais suab. Lub Nruam Isochronous Stream (CIS) hom teeb tsa lub zog qis Bluetooth ACL kev sib txuas ntawm cov khoom siv, ua kom ntseeg tau zoo dua True Wireless Stereo (TWS) synchronization thiab qis-latency, synchronized multi-kem suab xa mus.

Tshaj tawm Suab Feature

• Tshaj tawm suab rau Unlimited Devices: Broadcast Isochronous Stream (BIS) hom nyob rau hauv LE Audio tso cai rau cov khoom siv suab los tshaj tawm ib lossis ntau lub suab mus rau ib qho tsis txwv ntawm cov khoom siv suab. BIS yog tsim los rau pej xeem cov xwm txheej tshaj tawm suab, xws li ntsiag to TV mloog hauv khw noj mov lossis tshaj tawm rau pej xeem hauv tshav dav hlau. Nws txhawb synchronized suab playback ntawm txhua lub cuab yeej txais thiab ua kom xaiv cov kwj tshwj xeeb, xws li xaiv cov lus taug qab hauv qhov chaw ua yeeb yaj kiab. BIS yog unidirectional, txuag cov ntaub ntawv sib pauv, txo kev siv hluav taws xob, thiab qhib qhov muaj peev xwm tshiab yav dhau los tsis tuaj yeem ua tiav nrog kev siv Bluetooth classic.

Limitations of LE Audio

LE Audio muaj qhov zoo xws li lub suab zoo, kev siv hluav taws xob tsawg, qis latency, muaj zog sib cuam tshuam, thiab kev txhawb nqa rau ntau qhov kev sib txuas. Txawm li cas los xij, raws li kev siv tshuab tshiab, nws kuj muaj nws cov kev txwv:

• Device Compatibility Teeb meem: Vim muaj ntau lub tuam txhab hauv kev lag luam, kev tsim qauv thiab kev txais yuav ntawm LE Audio ntsib teeb meem, ua rau muaj teeb meem sib xws ntawm cov khoom sib txawv LE Audio.
• Performance Bottlenecks: Qhov nyuaj siab ntawm LC3 thiab LC3 ntxiv rau codec algorithms tso qee qhov kev xav tau ntawm nti ua lub zog. Qee cov chips tuaj yeem txhawb nqa cov txheej txheem tab sis tawm tsam los tswj cov txheej txheem encoding thiab kev txiav txim siab zoo.
• Limited Supported Devices: Tam sim no, muaj qee yam khoom siv uas txhawb nqa LE Audio. Txawm hais tias cov khoom lag luam flagship los ntawm cov khoom siv txawb thiab lub mloog pob ntseg tau pib qhia LE Audio, kev hloov ua tiav tseem yuav xav tau sijhawm. Txhawm rau hais txog qhov mob no, Feasycom tau tsim kho tshiab lub ntiaj teb thawj Bluetooth module uas txhawb LE Audio thiab Classic Audio ib txhij, tso cai rau kev txhim kho tshiab ntawm LE Audio functionality yam tsis muaj kev cuam tshuam cov neeg siv kev paub ntawm Classic Audio.

Applications of LE Audio

Raws li ntau qhov zoo ntawm LE Audio, tshwj xeeb tshaj yog Auracast (raws li BIS hom), nws tuaj yeem siv rau ntau qhov xwm txheej suab los txhim kho cov neeg siv cov kev paub suab:

• Tus Kheej Suab Sib Koom: Kev Tshaj Tawm Isochronous Stream (BIS) tso cai rau ib lossis ntau lub suab sib koom nrog cov khoom siv tsis txwv, ua rau cov neeg siv qhia lawv lub suab nrog cov neeg siv nyob ze lub mloog pob ntseg siv lawv cov smartphones lossis ntsiav tshuaj.
• Txhim kho/Assistive Mloog hauv Public Spaces: Auracast tsis tsuas yog pab muab kev nthuav dav dav rau cov tib neeg tsis hnov ​​​​lus thiab txhim kho kev muaj peev xwm pab mloog, tab sis kuj nthuav dav cov kev siv ntawm cov tshuab no rau cov neeg siv khoom nrog ntau qib kev noj qab haus huv.
• Txhawb ntau hom lus: Nyob rau hauv cov chaw uas cov neeg ntawm ntau hom lus sib sau ua ke, xws li cov chaw sib tham lossis xinesmas, Auracast tuaj yeem muab kev txhais lus ib txhij hauv tus neeg siv hom lus.
• Tour Guide Systems: Hauv cov chaw xws li cov tsev khaws puav pheej, cov chaw ua si kis las, thiab cov chaw ncig ua si, cov neeg siv tuaj yeem siv lawv lub pob ntseg lossis lub mloog pob ntseg los mloog cov suab paj nruag ncig saib, muab kev paub ntau dua.
• Silent TV Screens: Auracast tso cai rau cov neeg siv mloog lub suab ntawm TV thaum tsis muaj suab lossis thaum lub ntim qis dhau los hnov, txhim kho kev paub rau cov neeg tuaj saib hauv qhov chaw xws li gyms thiab cov kis las ncaws pob.

Yav Tom Ntej Trends of LE Audio

Raws li ABI Kev Tshawb Fawb qhov kev kwv yees, los ntawm 2028, cov khoom xa tuaj txhua xyoo ntawm LE Audio-txhawb cov cuab yeej yuav ncav cuag 3 lab, thiab los ntawm 2027, 90% ntawm cov xov tooj ntawm tes xa tawm txhua xyoo yuav txhawb nqa LE Audio. Undoubtedly, LE Audio yuav tsav ib qho kev hloov pauv hauv tag nrho Bluetooth audio field, txuas ntxiv tshaj li ib txwm suab xa mus rau cov ntawv thov hauv Is Taws Nem ntawm Yam (IoT), cov tsev ntse, thiab lwm qhov chaw.

Feasycom's LE Audio Products

Feasycom tau mob siab rau kev tshawb fawb thiab kev txhim kho ntawm Bluetooth modules, tshwj xeeb tshaj yog nyob rau hauv lub teb ntawm Bluetooth suab, ua rau kev lag luam nrog lub tshiab-kev ua tau zoo modules thiab receivers. Yog xav paub ntxiv, mus saib Feasycom's Bluetooth LE Audio Modules. saib peb LE Audio demonstration hauv YouTube.