Umsebenzi wokunciphisa umsindo ubaluleke kakhulu kuma-headphone.Enye iwukunciphisa umsindo futhi ugweme ukukhulisa ivolumu ngokweqile, ukuze unciphise umonakalo ezindlebeni.Okwesibili, hlunga umsindo ukuze uthuthukise ikhwalithi yomsindo nekhwalithi yekholi.Ukunciphisa umsindo kuhlukaniswe ngokuncishiswa komsindo okusebenzayo kanye nokunciphisa umsindo ongenzi lutho.
Ukuncishiswa komsindo okusekelwe ezimisweni zomzimba: ama-headphone asetshenziselwa ukwandisa nokugoqa yonke indlebe ukuze kuncishiswe umsindo ongenzi lutho.Zinezidingo eziphakeme zezinto zokwakha, ukungahambi kahle komoya futhi akulula ukomisa ngemva kokujuluka.Uhlobo lwendlebe "lufakwa" embotsheni yendlebe ukuze kuvalwe indlebe ukuze kuncishiswe umsindo.Akulungile ukugqoka isikhathi eside, ukucindezela ngaphakathi nangaphandle komsele wezindlebe akulingani, futhi isikhathi sokugqoka akufanele sibe side kakhulu, okuzothinta ukuzwa.
Ukunciphisa umsindo okusebenzayo kufinyelelwa ngokuhlaziya i-chip kumahedisethi.Ukulandelana kokunciphisa umsindo kuthi:
1. Okokuqala, imakrofoni yesignali ebekwe ku-earphone ithola umsindo we-low-frequency (100 ~ 1000Hz) endaweni ongazwakala yindlebe (kufika ku-3000hz okwamanje).
2. Khona-ke isignali yomsindo idluliselwa kumjikelezo wokulawula, owenza umsebenzi wesikhathi sangempela.
3. Uphondo lwe-hi fi lukhipha amaza omsindo anesigaba esiphambene kanye nobukhulu obufanayo nobomsindo ukuze kuncishiswe umsindo.
4. Ngakho-ke umsindo uyanyamalala futhi ungezwakali.
Ukuncishiswa komsindo okusebenzayo kuhlukaniswe i-ANC, i-ENC, i-CVC ne-DSP, ngakho-ke ake sihlaziye ukuthi lezi siNgisi zisho ukuthini.
Umgomo wokusebenza we-ANC: (ukulawula umsindo osebenzayo) ukuthi umbhobho uqoqa umsindo ovela ngaphandle, bese uhlelo luwuguqula lube igagasi lomsindo elihlanekezelwe bese liwungeza ekugcineni kophondo.Ekugcineni, umsindo ozwakala izindlebe zomuntu uthi: umsindo we-ambient + umsindo we-ambient ohlanekezelwe.Lezi zinhlobo ezimbili zomsindo zibekwe phezulu ukuze kuncishiswe umsindo wezinzwa, kanti ozuzayo nguyena.Ukuncishiswa komsindo okusebenzayo kungahlukaniswa ngokuncishiswa komsindo osebenzayo we-feedforward kanye nempendulo esebenzayo yokunciphisa umsindo ngokuya ngokuma kombhobho wokuthatha.
I-Enc: (ukukhanselwa komsindo wemvelo) ingacindezela ngempumelelo u-90% womsindo wemvelo ohlanekezelwe, ukuze kwehliswe umsindo wendawo kuze kube ngaphezu kuka-35dB, ukuze abadlali begeyimu bakwazi ukuxhumana ngokukhululekile.Ngohlelo lombhobho okabili, bala ngokunembile isiqondiso sesipika sokukhuluma, futhi ususe zonke izinhlobo zomsindo ophazamisayo endaweni kuyilapho uvikela izwi eliqondiwe ohlangothini oluyinhloko.
I-CVC: (ukuthwebula kwezwi okucacile) ubuchwepheshe bokunciphisa umsindo besoftware yezingcingo.Ikakhulukazi i-echo ekhiqizwa ngesikhathi socingo.Nge-software egcwele ye-duplex microphone denoising, inikeza i-echo kanye nomsebenzi wokuqeda umsindo wekholi.Iwubuchwepheshe obuthuthuke kakhulu bokunciphisa umsindo kumahedisethi ezingcingo ze-Bluetooth njengamanje.
I-DSP: (ukucubungula isignali yedijithali) ihloselwe kakhulu umsindo wemvamisa ephezulu nephansi.Isimiso sokusebenza ukuthi imakrofoni iqoqa umsindo wemvelo wangaphandle, bese uhlelo lukopisha igagasi lomsindo elibuyela emuva elilingana nomsindo wendawo wangaphandle ukuze livale umsindo, ukuze kuzuzwe umphumela ongcono wokunciphisa umsindo.Umgomo wokunciphisa umsindo we-DSP uyafana nowokunciphisa umsindo we-ANC.Kodwa-ke, umsindo oya phambili nowasemuva wokuncishiswa komsindo we-DSP unqanyuliwe ngokuqondile futhi uhlanganisana ngaphakathi kwesistimu.
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Isaziso se-copyright: Lesi sihloko siyindatshana yokuqala ye-CSDN blogger "momo1996_233", elandela isivumelwano se-copyright ye-CC 4.0 by-sa.Ukuze uphrinte kabusha, sicela unamathisele isixhumanisi somthombo wokuqala kanye nalesi saziso.
Isixhumanisi sokuqala: https://blog.csdn.net/momo1996_233/article/details/108659040
Isikhathi sokuthumela: Mar-19-2022
