AC3 (Audio Codec 3) ndi Audio psinjika mtundu ambiri ntchito DVD ndi Blu-ray chimbale Audio njanji.
Ntchito Zofala
DVD audio
Surround sound
Blu-ray audio
AC3 Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu
Kodi ndi fayilo ya AC3?
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AC3 (Dolby Digital) is a multi-channel surround sound audio format.
Kodi ndi AC3 yoyenera kusewera pa mahedifoni?
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Sichoncho - ndi bitstream yotumiza mafilimu. A AC3 stream imabweretsa mgwirizano wa multichannel womwe umayenera kusinthidwa ndi AV wolandirayo ndikutumizidwa ku mawu anzeru omwe ali m'nyumba. Foni kapena laptop iyenera kulowetsa pansi pa ma channel awiri kuti ikhoza kusewera, ndipo downmix nthawi zambiri ndi woyera komanso wolimba kuposa stereo track mastered as stereo. Konzani ngati malo osankhidwa ndi mahedifoni; Keep it if the destination is a receiver. AC-3 ndi surround track onse AV wolandirayo, DVD wosewera mpira ndi TV decodes natively, chifukwa chake ndibe basiline kufalitsa.
N'chifukwa chiyani soundtrack pa diski nthawi zonse ndi AC3?
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Msewera anali kuchotsa decoding audio mu fixed-function hardware ndi palibe mapulogalamu ndi palibe zosintha, kotero specification anasankha imodzi mtundu ndi aliyense disc anatseka kuyambira ananyamula izo. Izi ndi chifukwa chake wolandirayo amachita izo popanda kukhumudwa ndi msakatuli sadzakhudza izo - mtundu anapita kudera lonse la standard anapita, ndi kulikonse kwina. AC-3 ndi Dolby Digital, surround mtundu standardized kwa laserdisc, DVD, ATSC kufalitsa ndi sinema mu mapema 1990s.
AC3 idafotokozedwa m'mawu okha, popanda malo oyenera kwa mutu, album kapena chithunzi chachithunzi, kotero osewera amabwereranso kukuwonetsa dzina la fayilo. Kusintha kwa mtundu wokhala ndi tag ndi zomwe zimapangitsa kuti laibulale ikhale yosakata - ma tag amalemba nthawi yosintha, osati kubwezeretsedwa, kotero yembekezerani kuwonjezera chilichonse chomwe chimachokera. AC-3 ndi yosagwira ntchito ndi standards zamakono ndi si yovomerezeka ndi masamba, mafoni kapena ambiri web player popanda downmix kuti stereo.
Nchifukwa chiyani AC3 pa diski zambiri ndi mafilimu ngati sindikusankha?
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Chifukwa chake ndi chilolezo mu hardware kuposa kusankhidwa ndi wowerenga. The mtundu anafotokozedwa monga zofunika audio kwa optical disc ndi digito kufalitsa standards, kotero aliyense wosewera, wolandira ndi set-top box anasamutsa izo kwa zaka zambiri ndi makampani masamba anasamutsa mu izo mogwirizana. kuti ubiquity mu Living-room zida ndi mofanana ndi kukana kwake kuchokera masamba ndi mafoni mafoni.
Yes — format imagwira bwino ntchito ndi ma channels ambiri kuposa awiri, kotero kuti surround mix imasunga ma channels ake ophatikizidwa moyenera, osati kuikidwa mu stereo panjira. Kodi mumamva ngati surround kumadalira pa mbali ya mbali: wolandirayo adzachotsa ma channels onse, foni idzalowetsa panthawi yosewera popanda vuto lililonse. Kusintha kwa stereo-only format kumachititsa kuti kuikidwa kukhale kosalekeza.
Kodi ndi vuto kuti AC3 ili ndi zaka zoposa makumi atatu?
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Age yekha si vuto - angapo mtundu kuchokera kuti nthawi ndibe bwino, makamaka chifukwa chilichonse chili ndi zaka kuti akwaniritse iwo. Zimene zikukhudza ndi zimene nthawi anaganiza: mavidiyo ang'onoang'ono, mofulumira processors, palibe netiweki, ndi zizindikiro aliyense anafunikabe. Pamene amene anaganizabebe, mtundu ndi bwino. Pamene iwo sachita, kuti ndi chifukwa chosintha.
Nchifukwa chiyani fayilo ya AC3 siyidzasewera mu browser yanga?
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Mawebusayiti amachotsa mndandanda wafupi, wokhazikika wa ma audio formats ndi AC3 ndi kunja kwa izo, kotero fayilo imatsitsa pamalo osewera kapena wosewerayo amadziwitsa vuto. Makompyuta a desktop ndi sewero la codec layikulu limatsegula popanda vuto. Ngati ma audio amayenera kusewera patsamba la webusaiti, kusinthidwa kwake ndi kusinthidwa - palibe kuwongolera kwa wosewerayo kuwonjezera decoder yomwe mawebusayiti satumiza.
Kodi ndiyenera kusintha bwanji mafayilo anga a AC3?
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Kugwirizana ndi malo osankhidwa, si cholinga. Kwa nyimbo, 256 mpaka 320 kbps ndi zosaoneka kwa aliyense womvetsera; kwa mawu ndi podcasts, 96 mpaka 128 kbps ndi zambiri ndipo amadula fayiloyo ku theka. Kulemba mawu kudzera pa ma bitrate ochokera kumawononga malo - amasunga mawu omwe kale apita kudzera pa lossy pass ndipo sabwezeretsa chilichonse chomwe chimatulutsidwa ndi wolemba mawu woyamba.
Kodi kugwiritsa ntchito AC3 kumafunikira chilolezo cha patent?
