TWS headset digito chizindikiro ADM
Ndi kukula kosalekeza kwa msika wamutu wa TWS (True wireless stereo). Zofuna za ogwiritsa ntchito pazogulitsa zidasinthidwanso kuchoka pamalumikizidwe osavuta kupita ku miyezo yapamwamba. Mwachitsanzo, pofika chaka chino, chiwerengero chachikulu cha mahedifoni a TWS omwe ali ndi mafoni omveka bwino atulukira pamsika.
Kuti athe kulankhulana momveka bwino m'malo aphokoso kwambiri, ndizotheka kupanga ziwembu zomwe zimaphatikiza ma siginecha kuchokera ku khutu lamkati ndi maikolofoni akunja kuti agwiritse ntchito ukadaulo wanzeru, wogwirizana ndi chilengedwe. M'malo mwake, makampani ena apakhomo ndi akunja a algorithm amadzipereka ku izi, ndipo apeza zotsatira zina.
Zachidziwikire, makampani ambiri othana nawo tsopano akugogomezera kwambiri njira zochepetsera phokoso ngati m'mphepete AI (iyi ndi imodzi), koma kwenikweni, imakongoletsedwa kwambiri pamayankho omwe alipo, chifukwa chake gawoli limachotsedwa, tiyeni tiwone. zigawo zina zofunika choyamba Chiyambi, ndiko kuti, zomwe kuitana kuchepetsa phokoso kungachite.
Ponseponse, kuchepetsa phokoso loyimba foni kumadalira kulumikizana kwa Uplink (uplink) ndi Downlink (downlink). Pafupifupi Maikolofoni Array/AEC/NS/EQ/AGC/DRC, ubale womveka uli motere:
ADM (Adaptive Directional Microphone Array) ndiukadaulo wopangira ma siginoloji a digito omwe amapanga maikolofoni yolunjika kapena yoletsa phokoso pogwiritsa ntchito maikolofoni awiri okha amnidirectional. ADM imangosintha mawonekedwe ake kuti azitha kuwongolera phokoso m'malo osiyanasiyana kwinaku akusunga chizindikiro chokwanira. Njira yosinthira ndiyofulumira, imakhala ndi kusankha kwamphamvu pafupipafupi, ndipo imatha kuthetsa zosokoneza zingapo nthawi imodzi.
Kuphatikiza pa mawonekedwe ake abwino, ma ADM amatha kugwidwa ndi phokoso lamphepo kuposa maikolofoni achikhalidwe. Ukadaulo wa ADM umalola mitundu iwiri ya masinthidwe a maikolofoni: "endfire" ndi "broadfire".
Pamakonzedwe a endfire, gwero lazizindikiro (pakamwa pa wogwiritsa ntchito) lili pa axis (mzere wolumikiza maikolofoni awiri). Pakasinthidwe ka m'mbali mwake, imayang'ana mzere wowongoka pa axis yopingasa.
Pamakonzedwe a endfire, ADM ili ndi njira ziwiri zogwirira ntchito; "kutali-talk" ndi "kulankhula kwapafupi". Munjira yakutali, ADM imagwira ntchito ngati maikolofoni yolunjika bwino, imachepetsa chizindikiro kuchokera kumbuyo ndi mbali ndikusunga chizindikiro kutsogolo. Polankhulana moyandikana, ADM imakhala ngati maikolofoni yabwino kwambiri yoletsa phokoso, kuthetsa bwino mawu akutali. Ufulu wachibale wa mapangidwe amawu umapangitsa ma ADM kukhala abwino kwa mafoni am'manja, omwe amalola kusinthana "kofewa" pakati pa olankhula akutali ndi olankhula pafupi. Komabe, mapangidwe amtunduwu akagwiritsidwa ntchito m'makutu, makamaka m'makutu wa TWS, amaletsedwa kwambiri ngati wogwiritsa ntchitoyo amavala moyenera. Mofanana ndi ma airpods, wolembayo adawona kuti anthu ambiri ali ndi "mitundu yonse yachilendo" kuvala njira zapansi panthaka, zina zomwe zimakhala makutu a ogwiritsa ntchito. Maonekedwe, ndi zizolowezi zina zobvala, zimapangitsa kuti algorithm isagwire ntchito bwino.
Acoustic Echo Canceller (AEC)
Pamene gawo la chizindikiro mu duplex (nthawi yomweyo njira ziwiri) kulankhulana kubwerera ku gwero siginecha, amatchedwa "echo". Mu ma analogi aatali komanso pafupifupi makina onse olankhulirana a digito, ngakhale ma siginecha ang'onoang'ono a echo amatha kusokoneza chifukwa chakuchedwa kwambiri kwa maulendo obwerera.
Pamalo olumikizirana mawu, ma echoes amamvekedwe amapangidwa chifukwa cha kulumikizana kwamawu pakati pa wolankhula ndi maikolofoni. Chifukwa cha makonzedwe osagwirizana ndi njira yolumikizirana, monga ma vocoder otayika ndi ma transcoding, ma acoustic echoes amayenera kukonzedwa kwanuko (kuletsedwa) mkati mwa chipangizocho.
Noise Suppressor (NS)
Ukadaulo woletsa phokoso umachepetsa phokoso losasunthika komanso lokhalitsa pamasinthidwe amawu amtundu umodzi, umathandizira kusinthasintha kwa ma sign-to-phokoso, umapangitsa kuti munthu azitha kumva bwino, komanso amachepetsa kutopa kwa makutu.
Zachidziwikire, pali njira zambiri zenizeni mu gawoli, monga BF (Beamforming), kapena PF (Post fyuluta) ndi njira zina zosinthira. Mwambiri, AEC, NS, BF, ndi PF ndiye mbali zazikuluzikulu zochepetsera phokoso. Ndizowona kuti aliyense wopereka yankho la algorithm ali ndi zabwino ndi zovuta zosiyanasiyana.
Munjira yolumikizirana ndi mawu, kuchuluka kwa siginecha yamawu kumatha kusiyanasiyana chifukwa cha mtunda pakati pa wogwiritsa ntchito ndi maikolofoni, komanso chifukwa cha mawonekedwe a njira yolumikizirana.
Dynamic Range Compression (DRC) ndiye njira yosavuta yofananira ma siginoloji. Kuponderezana kumachepetsa kusinthasintha kwa siginecha pochepetsa (kupondereza) magawo amawu amphamvu ndikusunga mokwanira magawo amawu ofooka. Choncho, chizindikiro chonsecho chikhoza kukulitsidwa mowonjezereka kuti zizindikiro zofooka zimveke bwino.
Ukadaulo wa AGC mu digito umakulitsa kuchuluka kwa ma siginecha (kukulitsa) pomwe siginecha yamawu ili yofooka, ndikuifinya ngati siginecha yamphamvu. M'malo aphokoso, anthu amakonda kuyankhula mokweza, ndipo izi zimangopangitsa kuti mayendedwe a maikolofoni akhale ochepa, motero amachepetsa phokoso lozungulira ndikusunga mawu achidwi pamlingo woyenera. Komanso, m’malo opanda phokoso, anthu amalankhula mwakachetechete kuti mawu awo amveke momveka bwino popanda phokoso lalikulu.
Nthawi yotumiza: Jun-07-2022
